fix(apigateway): update the API

#### apigateway:v1beta

The following keys were changed:
- resources.projects.resources.locations.methods.list.parameters.extraLocationTypes.description

#### apigateway:v1

The following keys were changed:
- resources.projects.resources.locations.methods.list.parameters.extraLocationTypes.description

Author: yoshi-automation

discovery/apigateway-v1.json

@@ -143,7 +143,7 @@
               ],
               "parameters": {
                 "extraLocationTypes": {
-                  "description": "Optional. Unless explicitly documented otherwise, don't use this unsupported field which is primarily intended for internal usage.",
+                  "description": "Optional. Do not use this field. It is unsupported and is ignored unless explicitly documented otherwise. This is primarily for internal usage.",
                   "location": "query",
                   "repeated": true,
                   "type": "string"
@@ -1094,7 +1094,7 @@
       }
     }
   },
-  "revision": "20251001",
+  "revision": "20251021",
   "rootUrl": "https://apigateway.googleapis.com/",
   "schemas": {
     "ApigatewayApi": {

discovery/apigateway-v1beta.json

@@ -143,7 +143,7 @@
               ],
               "parameters": {
                 "extraLocationTypes": {
-                  "description": "Optional. Unless explicitly documented otherwise, don't use this unsupported field which is primarily intended for internal usage.",
+                  "description": "Optional. Do not use this field. It is unsupported and is ignored unless explicitly documented otherwise. This is primarily for internal usage.",
                   "location": "query",
                   "repeated": true,
                   "type": "string"
@@ -1094,7 +1094,7 @@
       }
     }
   },
-  "revision": "20251001",
+  "revision": "20251021",
   "rootUrl": "https://apigateway.googleapis.com/",
   "schemas": {
     "ApigatewayApi": {

src/apis/apigateway/v1.ts

@@ -793,7 +793,7 @@ export namespace apigateway_v1 {
      *
      *   // Do the magic
      *   const res = await apigateway.projects.locations.list({
-     *     // Optional. Unless explicitly documented otherwise, don't use this unsupported field which is primarily intended for internal usage.
+     *     // Optional. Do not use this field. It is unsupported and is ignored unless explicitly documented otherwise. This is primarily for internal usage.
      *     extraLocationTypes: 'placeholder-value',
      *     // A filter to narrow down results to a preferred subset. The filtering language accepts strings like `"displayName=tokyo"`, and is documented in more detail in [AIP-160](https://google.aip.dev/160).
      *     filter: 'placeholder-value',
@@ -925,7 +925,7 @@ export namespace apigateway_v1 {
   export interface Params$Resource$Projects$Locations$List
     extends StandardParameters {
     /**
-     * Optional. Unless explicitly documented otherwise, don't use this unsupported field which is primarily intended for internal usage.
+     * Optional. Do not use this field. It is unsupported and is ignored unless explicitly documented otherwise. This is primarily for internal usage.
      */
     extraLocationTypes?: string[];
     /**

src/apis/apigateway/v1beta.ts

@@ -815,7 +815,7 @@ export namespace apigateway_v1beta {
      *
      *   // Do the magic
      *   const res = await apigateway.projects.locations.list({
-     *     // Optional. Unless explicitly documented otherwise, don't use this unsupported field which is primarily intended for internal usage.
+     *     // Optional. Do not use this field. It is unsupported and is ignored unless explicitly documented otherwise. This is primarily for internal usage.
      *     extraLocationTypes: 'placeholder-value',
      *     // A filter to narrow down results to a preferred subset. The filtering language accepts strings like `"displayName=tokyo"`, and is documented in more detail in [AIP-160](https://google.aip.dev/160).
      *     filter: 'placeholder-value',
@@ -947,7 +947,7 @@ export namespace apigateway_v1beta {
   export interface Params$Resource$Projects$Locations$List
     extends StandardParameters {
     /**
-     * Optional. Unless explicitly documented otherwise, don't use this unsupported field which is primarily intended for internal usage.
+     * Optional. Do not use this field. It is unsupported and is ignored unless explicitly documented otherwise. This is primarily for internal usage.
      */
     extraLocationTypes?: string[];
     /**