chore: regenerate chat client (#29325)

Generated in GitHub action: https://togithub.com/googleapis/googleapis/google-api-java-client-services/actions/workflows/codegen.yaml

Author: yoshi-code-bot

clients/google-api-services-chat/v1/2.0.0/README.md

@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-chat</artifactId>
-      <version>v1-rev20250819-2.0.0</version>
+      <version>v1-rev20250821-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-chat:v1-rev20250819-2.0.0'
+  implementation 'com.google.apis:google-api-services-chat:v1-rev20250821-2.0.0'
 }
 ```
 

clients/google-api-services-chat/v1/2.0.0/com/google/api/services/chat/v1/HangoutsChat.java

@@ -2697,13 +2697,14 @@ public Patch set(String parameterName, Object value) {
     }
     /**
      * Returns a list of spaces in a Google Workspace organization based on an administrator's search.
-     * Requires [user authentication with administrator
+     * In the request, set `use_admin_access` to `true`. For an example, see [Search for and manage
+     * spaces](https://developers.google.com/workspace/chat/search-manage-admin). Requires [user
+     * authentication with administrator
      * privileges](https://developers.google.com/workspace/chat/authenticate-authorize-chat-user#admin-
      * privileges) and one of the following [authorization
      * scopes](https://developers.google.com/workspace/chat/authenticate-authorize#chat-api-scopes): -
      * `https://www.googleapis.com/auth/chat.admin.spaces.readonly` -
-     * `https://www.googleapis.com/auth/chat.admin.spaces` In the request, set `use_admin_access` to
-     * `true`.
+     * `https://www.googleapis.com/auth/chat.admin.spaces`
      *
      * Create a request for the method "spaces.search".
      *
@@ -2724,13 +2725,14 @@ public class Search extends HangoutsChatRequest<com.google.api.services.chat.v1.
 
       /**
        * Returns a list of spaces in a Google Workspace organization based on an administrator's search.
-       * Requires [user authentication with administrator
+       * In the request, set `use_admin_access` to `true`. For an example, see [Search for and manage
+       * spaces](https://developers.google.com/workspace/chat/search-manage-admin). Requires [user
+       * authentication with administrator
        * privileges](https://developers.google.com/workspace/chat/authenticate-authorize-chat-
        * user#admin-privileges) and one of the following [authorization
        * scopes](https://developers.google.com/workspace/chat/authenticate-authorize#chat-api-scopes): -
        * `https://www.googleapis.com/auth/chat.admin.spaces.readonly` -
-       * `https://www.googleapis.com/auth/chat.admin.spaces` In the request, set `use_admin_access` to
-       * `true`.
+       * `https://www.googleapis.com/auth/chat.admin.spaces`
        *
        * Create a request for the method "spaces.search".
        *

clients/google-api-services-chat/v1/2.0.0/pom.xml

@@ -8,8 +8,8 @@
 
   <groupId>com.google.apis</groupId>
   <artifactId>google-api-services-chat</artifactId>
-  <version>v1-rev20250819-2.0.0</version>
-  <name>Google Chat API v1-rev20250819-2.0.0</name>
+  <version>v1-rev20250821-2.0.0</version>
+  <name>Google Chat API v1-rev20250821-2.0.0</name>
   <packaging>jar</packaging>
 
   <inceptionYear>2011</inceptionYear>

clients/google-api-services-chat/v1/README.md

@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-chat</artifactId>
-      <version>v1-rev20250819-2.0.0</version>
+      <version>v1-rev20250821-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-chat:v1-rev20250819-2.0.0'
+  implementation 'com.google.apis:google-api-services-chat:v1-rev20250821-2.0.0'
 }
 ```