feat(identitytoolkit): update the API

#### identitytoolkit:v2

The following keys were added:
- schemas.GoogleCloudIdentitytoolkitAdminV2AppleSignInConfig.properties.codeFlowConfig.description

Author: yoshi-automation

discovery/identitytoolkit-v2.json

@@ -1655,7 +1655,7 @@
       }
     }
   },
-  "revision": "20240424",
+  "revision": "20240522",
   "rootUrl": "https://identitytoolkit.googleapis.com/",
   "schemas": {
     "GoogleCloudIdentitytoolkitAdminV2AllowByDefault": {
@@ -1709,7 +1709,8 @@
           "type": "array"
         },
         "codeFlowConfig": {
-          "$ref": "GoogleCloudIdentitytoolkitAdminV2CodeFlowConfig"
+          "$ref": "GoogleCloudIdentitytoolkitAdminV2CodeFlowConfig",
+          "description": "Additional config for Apple for code flow."
         }
       },
       "type": "object"

src/apis/identitytoolkit/v2.ts

@@ -167,6 +167,9 @@ export namespace identitytoolkit_v2 {
      * A list of Bundle ID's usable by this project
      */
     bundleIds?: string[] | null;
+    /**
+     * Additional config for Apple for code flow.
+     */
     codeFlowConfig?: Schema$GoogleCloudIdentitytoolkitAdminV2CodeFlowConfig;
   }
   /**