Regenerate apihub client (googleapis#6656)

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

Author: yoshi-code-bot

src/APIhub/Resource/ProjectsLocationsPlugins.php

@@ -48,7 +48,7 @@ class ProjectsLocationsPlugins extends \Google\Service\Resource
    * field is optional. * If provided, the same will be used. The service will
    * throw an error if the specified id is already used by another Plugin resource
    * in the API hub instance. * If not provided, a system generated id will be
-   * used. This value should be 4-500 characters, overall resource name which will
+   * used. This value should be 4-63 characters, overall resource name which will
    * be of format `projects/{project}/locations/{location}/plugins/{plugin}`, its
    * length is limited to 1000 characters and valid characters are /a-z[0-9]-_/.
    * @return GoogleCloudApihubV1Plugin

src/APIhub/Resource/ProjectsLocationsPluginsInstances.php

@@ -47,7 +47,7 @@ class ProjectsLocationsPluginsInstances extends \Google\Service\Resource
    * resource name. This field is optional. * If provided, the same will be used.
    * The service will throw an error if the specified id is already used by
    * another plugin instance in the plugin resource. * If not provided, a system
-   * generated id will be used. This value should be 4-500 characters, and valid
+   * generated id will be used. This value should be 4-63 characters, and valid
    * characters are /a-z[0-9]-_/.
    * @return GoogleLongrunningOperation
    * @throws \Google\Service\Exception