feat(workstations)!: update the API

BREAKING CHANGE: This release has breaking changes.

#### workstations:v1beta

The following keys were deleted:
- schemas.Empty.description
- schemas.Empty.id
- schemas.Empty.type
- schemas.OperationMetadata.properties.cancelRequested.description
- schemas.OperationMetadata.properties.cancelRequested.readOnly
- schemas.OperationMetadata.properties.cancelRequested.type
- schemas.OperationMetadata.properties.statusDetail.description
- schemas.OperationMetadata.properties.statusDetail.readOnly
- schemas.OperationMetadata.properties.statusDetail.type

The following keys were added:
- schemas.CustomerEncryptionKey.description
- schemas.CustomerEncryptionKey.id
- schemas.CustomerEncryptionKey.properties.kmsKey.description
- schemas.CustomerEncryptionKey.properties.kmsKey.type
- schemas.CustomerEncryptionKey.properties.kmsKeyServiceAccount.description
- schemas.CustomerEncryptionKey.properties.kmsKeyServiceAccount.type
- schemas.CustomerEncryptionKey.type
- schemas.GoogleProtobufEmpty.description
- schemas.GoogleProtobufEmpty.id
- schemas.GoogleProtobufEmpty.type
- schemas.OperationMetadata.properties.requestedCancellation.description
- schemas.OperationMetadata.properties.requestedCancellation.readOnly
- schemas.OperationMetadata.properties.requestedCancellation.type
- schemas.OperationMetadata.properties.statusMessage.description
- schemas.OperationMetadata.properties.statusMessage.readOnly
- schemas.OperationMetadata.properties.statusMessage.type
- schemas.Workstation.properties.labels.additionalProperties.type
- schemas.Workstation.properties.labels.description
- schemas.Workstation.properties.labels.type
- schemas.WorkstationCluster.properties.labels.additionalProperties.type
- schemas.WorkstationCluster.properties.labels.description
- schemas.WorkstationCluster.properties.labels.type
- schemas.WorkstationConfig.properties.encryptionKey.$ref
- schemas.WorkstationConfig.properties.encryptionKey.description
- schemas.WorkstationConfig.properties.labels.additionalProperties.type
- schemas.WorkstationConfig.properties.labels.description
- schemas.WorkstationConfig.properties.labels.type

The following keys were changed:
- resources.projects.resources.locations.resources.operations.methods.cancel.response.$ref
- resources.projects.resources.locations.resources.operations.methods.delete.response.$ref
- resources.projects.resources.locations.resources.workstationClusters.methods.create.description
- resources.projects.resources.locations.resources.workstationClusters.methods.delete.description
- resources.projects.resources.locations.resources.workstationClusters.methods.delete.parameters.force.description
- resources.projects.resources.locations.resources.workstationClusters.methods.get.description
- resources.projects.resources.locations.resources.workstationClusters.methods.list.description
- resources.projects.resources.locations.resources.workstationClusters.methods.patch.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.methods.create.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.methods.delete.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.methods.get.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.methods.list.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.methods.listUsable.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.methods.patch.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.resources.workstations.methods.create.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.resources.workstations.methods.delete.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.resources.workstations.methods.get.description
- resources.projects.resources.locations.resources.workstationClusters.resources.workstationConfigs.resources.workstations.methods.patch.description
- schemas.GceConfidentialInstanceConfig.description
- schemas.GceInstance.description
- schemas.GceInstance.properties.confidentialInstanceConfig.description
- schemas.GceInstance.properties.machineType.description
- schemas.GceInstance.properties.poolSize.description
- schemas.GceInstance.properties.shieldedInstanceConfig.description
- schemas.GceInstance.properties.tags.description
- schemas.GceRegionalPersistentDisk.properties.fsType.description
- schemas.GceRegionalPersistentDisk.properties.reclaimPolicy.description
- schemas.GceRegionalPersistentDisk.properties.reclaimPolicy.enumDescriptions
- schemas.GceShieldedInstanceConfig.description
- schemas.GenerateAccessTokenResponse.properties.accessToken.description
- schemas.Host.description
- schemas.Host.properties.gceInstance.description
- schemas.OperationMetadata.description
- schemas.OperationMetadata.properties.createTime.description
- schemas.OperationMetadata.properties.endTime.description
- schemas.PersistentDirectory.description
- schemas.PersistentDirectory.properties.mountPath.description
- schemas.PrivateClusterConfig.properties.clusterHostname.description
- schemas.PrivateClusterConfig.properties.enablePrivateEndpoint.description
- schemas.PrivateClusterConfig.properties.serviceAttachmentUri.description
- schemas.Workstation.properties.host.description
- schemas.WorkstationCluster.description
- schemas.WorkstationCluster.properties.network.description
- schemas.WorkstationCluster.properties.subnetwork.description
- schemas.WorkstationConfig.description
- schemas.WorkstationConfig.properties.container.description
- schemas.WorkstationConfig.properties.host.description
- schemas.WorkstationConfig.properties.persistentDirectories.description