Regenerate vpcaccess client (#5009)

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

src/ServerlessVPCAccess.php

@@ -41,6 +41,7 @@ class ServerlessVPCAccess extends \Google\Service
   public $projects_locations;
   public $projects_locations_connectors;
   public $projects_locations_operations;
+  public $rootUrlTemplate;
 
   /**
    * Constructs the internal representation of the ServerlessVPCAccess service.
@@ -53,6 +54,7 @@ public function __construct($clientOrConfig = [], $rootUrl = null)
   {
     parent::__construct($clientOrConfig);
     $this->rootUrl = $rootUrl ?: 'https://vpcaccess.googleapis.com/';
+    $this->rootUrlTemplate = $rootUrl ?: 'https://vpcaccess.UNIVERSE_DOMAIN/';
     $this->servicePath = '';
     $this->batchPath = 'batch';
     $this->version = 'v1';