fix(content): update the API

#### content:v2.1

The following keys were changed:
- schemas.Promotion.properties.contentLanguage.description
- schemas.Promotion.properties.targetCountry.description

discovery/content-v2.1.json

@@ -5953,7 +5953,7 @@
       }
     }
   },
-  "revision": "20230123",
+  "revision": "20230202",
   "rootUrl": "https://shoppingcontent.googleapis.com/",
   "schemas": {
     "Account": {
@@ -14156,7 +14156,7 @@
           "type": "array"
         },
         "contentLanguage": {
-          "description": "Required. The content language used as part of the unique identifier. `en` content language is available for all target countries. `fr` content language is available for `CA` and `FR` target countries, and `de` content language is available for `DE` target country.",
+          "description": "Required. The content language used as part of the unique identifier. `en` content language is available for all target countries. `fr` content language is available for `CA` and `FR` target countries. `de` content language is available for `DE` target country. `nl` content language is available for `NL` target country. `it` content language is available for `IT` target country. `pt` content language is available for `BR` target country. `ja` content language is available for `JP` target country. `ko` content language is available for `KR` target country.",
           "type": "string"
         },
         "couponValueType": {
@@ -14418,7 +14418,7 @@
           "type": "array"
         },
         "targetCountry": {
-          "description": "Required. The target country used as part of the unique identifier. Can be `AU`, `CA`, `DE`, `FR`, `GB`, `IN` or `US`.",
+          "description": "Required. The target country used as part of the unique identifier. Can be `AU`, `CA`, `DE`, `FR`, `GB`, `IN`, `US`, `BR`, `ES`, `NL`, `JP`, `IT` or `KR`.",
           "type": "string"
         }
       },

src/apis/content/v2.1.ts

@@ -6316,7 +6316,7 @@ export namespace content_v2_1 {
      */
     brandExclusion?: string[] | null;
     /**
-     * Required. The content language used as part of the unique identifier. `en` content language is available for all target countries. `fr` content language is available for `CA` and `FR` target countries, and `de` content language is available for `DE` target country.
+     * Required. The content language used as part of the unique identifier. `en` content language is available for all target countries. `fr` content language is available for `CA` and `FR` target countries. `de` content language is available for `DE` target country. `nl` content language is available for `NL` target country. `it` content language is available for `IT` target country. `pt` content language is available for `BR` target country. `ja` content language is available for `JP` target country. `ko` content language is available for `KR` target country.
      */
     contentLanguage?: string | null;
     /**
@@ -6468,7 +6468,7 @@ export namespace content_v2_1 {
      */
     storeCodeExclusion?: string[] | null;
     /**
-     * Required. The target country used as part of the unique identifier. Can be `AU`, `CA`, `DE`, `FR`, `GB`, `IN` or `US`.
+     * Required. The target country used as part of the unique identifier. Can be `AU`, `CA`, `DE`, `FR`, `GB`, `IN`, `US`, `BR`, `ES`, `NL`, `JP`, `IT` or `KR`.
      */
     targetCountry?: string | null;
   }