fix(accesscontextmanager): update the API

#### accesscontextmanager:v1

The following keys were changed:
- schemas.GcpUserAccessBinding.properties.groupKey.description

Author: yoshi-automation

discovery/accesscontextmanager-v1.json

@@ -1295,7 +1295,7 @@
       }
     }
   },
-  "revision": "20250412",
+  "revision": "20250723",
   "rootUrl": "https://accesscontextmanager.googleapis.com/",
   "schemas": {
     "AccessContextManagerOperationMetadata": {
@@ -1913,7 +1913,7 @@
           "type": "array"
         },
         "groupKey": {
-          "description": "Required. Immutable. Google Group id whose members are subject to this binding's restrictions. See \"id\" in the [G Suite Directory API's Groups resource] (https://developers.google.com/admin-sdk/directory/v1/reference/groups#resource). If a group's email address/alias is changed, this resource will continue to point at the changed group. This field does not accept group email addresses or aliases. Example: \"01d520gv4vjcrht\"",
+          "description": "Optional. Immutable. Google Group id whose users are subject to this binding's restrictions. See \"id\" in the [Google Workspace Directory API's Group Resource] (https://developers.google.com/admin-sdk/directory/v1/reference/groups#resource). If a group's email address/alias is changed, this resource will continue to point at the changed group. This field does not accept group email addresses or aliases. Example: \"01d520gv4vjcrht\"",
           "type": "string"
         },
         "name": {

src/apis/accesscontextmanager/v1.ts

@@ -525,7 +525,7 @@ export namespace accesscontextmanager_v1 {
      */
     dryRunAccessLevels?: string[] | null;
     /**
-     * Required. Immutable. Google Group id whose members are subject to this binding's restrictions. See "id" in the [G Suite Directory API's Groups resource] (https://developers.google.com/admin-sdk/directory/v1/reference/groups#resource). If a group's email address/alias is changed, this resource will continue to point at the changed group. This field does not accept group email addresses or aliases. Example: "01d520gv4vjcrht"
+     * Optional. Immutable. Google Group id whose users are subject to this binding's restrictions. See "id" in the [Google Workspace Directory API's Group Resource] (https://developers.google.com/admin-sdk/directory/v1/reference/groups#resource). If a group's email address/alias is changed, this resource will continue to point at the changed group. This field does not accept group email addresses or aliases. Example: "01d520gv4vjcrht"
      */
     groupKey?: string | null;
     /**