feat(dialogflow): update the api

#### dialogflow:v2

The following keys were deleted:
- schemas.GoogleCloudDialogflowV2EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecRequest (Total Keys: 3)
- schemas.GoogleCloudDialogflowV2beta1EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecRequest (Total Keys: 3)

The following keys were added:
- schemas.GoogleCloudDialogflowV2HumanAgentAssistantConfigSuggestionQueryConfig.properties.sections.$ref (Total Keys: 1)
- schemas.GoogleCloudDialogflowV2HumanAgentAssistantConfigSuggestionQueryConfigSections (Total Keys: 4)

#### dialogflow:v2beta1

The following keys were deleted:
- schemas.GoogleCloudDialogflowV2EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecRequest (Total Keys: 3)
- schemas.GoogleCloudDialogflowV2beta1EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecRequest (Total Keys: 3)

The following keys were added:
- schemas.GoogleCloudDialogflowV2beta1HumanAgentAssistantConfigSuggestionQueryConfig.properties.sections.$ref (Total Keys: 1)
- schemas.GoogleCloudDialogflowV2beta1HumanAgentAssistantConfigSuggestionQueryConfigSections (Total Keys: 4)

#### dialogflow:v3

The following keys were deleted:
- schemas.GoogleCloudDialogflowV2EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecRequest (Total Keys: 3)
- schemas.GoogleCloudDialogflowV2beta1EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecRequest (Total Keys: 3)

The following keys were added:
- resources.projects.resources.locations.resources.agents.resources.generators.methods.create (Total Keys: 14)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.delete (Total Keys: 13)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.get (Total Keys: 13)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.list (Total Keys: 18)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.patch (Total Keys: 17)
- schemas.GoogleCloudDialogflowCxV3Generator (Total Keys: 11)
- schemas.GoogleCloudDialogflowCxV3ListGeneratorsResponse (Total Keys: 5)
- schemas.GoogleCloudDialogflowCxV3Phrase (Total Keys: 3)

#### dialogflow:v3beta1

The following keys were deleted:
- schemas.GoogleCloudDialogflowV2EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2InitializeEncryptionSpecRequest (Total Keys: 3)
- schemas.GoogleCloudDialogflowV2beta1EncryptionSpec (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecMetadata (Total Keys: 4)
- schemas.GoogleCloudDialogflowV2beta1InitializeEncryptionSpecRequest (Total Keys: 3)

The following keys were added:
- resources.projects.resources.locations.resources.agents.resources.generators.methods.create (Total Keys: 14)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.delete (Total Keys: 13)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.get (Total Keys: 13)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.list (Total Keys: 18)
- resources.projects.resources.locations.resources.agents.resources.generators.methods.patch (Total Keys: 17)
- schemas.GoogleCloudDialogflowCxV3beta1Generator (Total Keys: 11)
- schemas.GoogleCloudDialogflowCxV3beta1ListGeneratorsResponse (Total Keys: 5)
- schemas.GoogleCloudDialogflowCxV3beta1Phrase (Total Keys: 3)

docs/dyn/dialogflow_v2.projects.agent.environments.users.sessions.html

@@ -152,7 +152,7 @@ <h3>Method Details</h3>
       &quot;enableAutomaticPunctuation&quot;: True or False, # Enable automatic punctuation option at the speech backend.
       &quot;enableWordInfo&quot;: True or False, # If `true`, Dialogflow returns SpeechWordInfo in StreamingRecognitionResult with information about the recognized speech words, e.g. start and end time offsets. If false or unspecified, Speech doesn&#x27;t return any word-level information.
       &quot;languageCode&quot;: &quot;A String&quot;, # Required. The language of the supplied audio. Dialogflow does not do translations. See [Language Support](https://cloud.google.com/dialogflow/docs/reference/language) for a list of the currently supported language codes. Note that queries in the same session do not necessarily need to specify the same language.
-      &quot;model&quot;: &quot;A String&quot;, # Which Speech model to select for the given request. Select the model best suited to your domain to get best results. If a model is not explicitly specified, then we auto-select a model based on the parameters in the InputAudioConfig. If enhanced speech model is enabled for the agent and an enhanced version of the specified model for the language does not exist, then the speech is recognized using the standard version of the specified model. Refer to [Cloud Speech API documentation](https://cloud.google.com/speech-to-text/docs/basics#select-model) for more details. If you specify a model, the following models typically have the best performance: - phone_call (best for Agent Assist and telephony) - latest_short (best for Dialogflow non-telephony) - command_and_search (best for very short utterances and commands)
+      &quot;model&quot;: &quot;A String&quot;, # Optional. Which Speech model to select for the given request. For more information, see [Speech models](https://cloud.google.com/dialogflow/es/docs/speech-models).
       &quot;modelVariant&quot;: &quot;A String&quot;, # Which variant of the Speech model to use.
       &quot;phraseHints&quot;: [ # A list of strings containing words and phrases that the speech recognizer should recognize with higher likelihood. See [the Cloud Speech documentation](https://cloud.google.com/speech-to-text/docs/basics#phrase-hints) for more details. This field is deprecated. Please use [`speech_contexts`]() instead. If you specify both [`phrase_hints`]() and [`speech_contexts`](), Dialogflow will treat the [`phrase_hints`]() as a single additional [`SpeechContext`]().
         &quot;A String&quot;,

docs/dyn/dialogflow_v2.projects.agent.sessions.html

@@ -152,7 +152,7 @@ <h3>Method Details</h3>
       &quot;enableAutomaticPunctuation&quot;: True or False, # Enable automatic punctuation option at the speech backend.
       &quot;enableWordInfo&quot;: True or False, # If `true`, Dialogflow returns SpeechWordInfo in StreamingRecognitionResult with information about the recognized speech words, e.g. start and end time offsets. If false or unspecified, Speech doesn&#x27;t return any word-level information.
       &quot;languageCode&quot;: &quot;A String&quot;, # Required. The language of the supplied audio. Dialogflow does not do translations. See [Language Support](https://cloud.google.com/dialogflow/docs/reference/language) for a list of the currently supported language codes. Note that queries in the same session do not necessarily need to specify the same language.
-      &quot;model&quot;: &quot;A String&quot;, # Which Speech model to select for the given request. Select the model best suited to your domain to get best results. If a model is not explicitly specified, then we auto-select a model based on the parameters in the InputAudioConfig. If enhanced speech model is enabled for the agent and an enhanced version of the specified model for the language does not exist, then the speech is recognized using the standard version of the specified model. Refer to [Cloud Speech API documentation](https://cloud.google.com/speech-to-text/docs/basics#select-model) for more details. If you specify a model, the following models typically have the best performance: - phone_call (best for Agent Assist and telephony) - latest_short (best for Dialogflow non-telephony) - command_and_search (best for very short utterances and commands)
+      &quot;model&quot;: &quot;A String&quot;, # Optional. Which Speech model to select for the given request. For more information, see [Speech models](https://cloud.google.com/dialogflow/es/docs/speech-models).
       &quot;modelVariant&quot;: &quot;A String&quot;, # Which variant of the Speech model to use.
       &quot;phraseHints&quot;: [ # A list of strings containing words and phrases that the speech recognizer should recognize with higher likelihood. See [the Cloud Speech documentation](https://cloud.google.com/speech-to-text/docs/basics#phrase-hints) for more details. This field is deprecated. Please use [`speech_contexts`]() instead. If you specify both [`phrase_hints`]() and [`speech_contexts`](), Dialogflow will treat the [`phrase_hints`]() as a single additional [`SpeechContext`]().
         &quot;A String&quot;,