fix(chat): update the API

#### chat:v1

The following keys were changed:
- schemas.Space.properties.customer.description

Author: yoshi-automation

discovery/chat-v1.json

@@ -1528,7 +1528,7 @@
       }
     }
   },
-  "revision": "20250727",
+  "revision": "20250731",
   "rootUrl": "https://chat.googleapis.com/",
   "schemas": {
     "AccessSettings": {
@@ -4950,7 +4950,7 @@
           "type": "string"
         },
         "customer": {
-          "description": "Optional. Immutable. The customer id of the domain of the space. Required only when creating a space with [app authentication](https://developers.google.com/workspace/chat/authenticate-authorize-chat-app) and `SpaceType` is `SPACE`, otherwise should not be set. In the format `customers/{customer}`, where `customer` is the `id` from the [Admin SDK customer resource]( https://developers.google.com/admin-sdk/directory/reference/rest/v1/customers). Private apps can also use the `customers/my_customer` alias to create the space in the same Google Workspace organization as the app. For DMs, this field isn't populated.",
+          "description": "Optional. Immutable. The customer id of the domain of the space. Required only when creating a space with [app authentication](https://developers.google.com/workspace/chat/authenticate-authorize-chat-app) and `SpaceType` is `SPACE`, otherwise should not be set. In the format `customers/{customer}`, where `customer` is the `id` from the [Admin SDK customer resource](https://developers.google.com/admin-sdk/directory/reference/rest/v1/customers). Private apps can also use the `customers/my_customer` alias to create the space in the same Google Workspace organization as the app. For DMs, this field isn't populated.",
           "type": "string"
         },
         "displayName": {

src/apis/chat/v1.ts

@@ -2430,7 +2430,7 @@ export namespace chat_v1 {
      */
     createTime?: string | null;
     /**
-     * Optional. Immutable. The customer id of the domain of the space. Required only when creating a space with [app authentication](https://developers.google.com/workspace/chat/authenticate-authorize-chat-app) and `SpaceType` is `SPACE`, otherwise should not be set. In the format `customers/{customer\}`, where `customer` is the `id` from the [Admin SDK customer resource]( https://developers.google.com/admin-sdk/directory/reference/rest/v1/customers). Private apps can also use the `customers/my_customer` alias to create the space in the same Google Workspace organization as the app. For DMs, this field isn't populated.
+     * Optional. Immutable. The customer id of the domain of the space. Required only when creating a space with [app authentication](https://developers.google.com/workspace/chat/authenticate-authorize-chat-app) and `SpaceType` is `SPACE`, otherwise should not be set. In the format `customers/{customer\}`, where `customer` is the `id` from the [Admin SDK customer resource](https://developers.google.com/admin-sdk/directory/reference/rest/v1/customers). Private apps can also use the `customers/my_customer` alias to create the space in the same Google Workspace organization as the app. For DMs, this field isn't populated.
      */
     customer?: string | null;
     /**