Move Cloud Build Worker Pool to GA. (#5356) (#399)

* Move Cloud Build Worker Pool to GA.

Note: this includes some unusual changes due to deviations between the beta and GA APIs.

* upgrade dcl.

* finish removing version gate.

* Use new GA / Beta versions, neither of which is ACL'd.

Signed-off-by: Modular Magician <magic-modules@google.com>

converters/google/resources/config.go

@@ -166,6 +166,8 @@ type Config struct {
 	EventarcBasePath             string
 	GkeHubBasePath               string
 	OrgPolicyBasePath            string
+	// CloudBuild WorkerPool uses a different endpoint (v1beta1) than any other CloudBuild resources
+	CloudBuildWorkerPoolBasePath string
 }
 
 const AccessApprovalBasePathKey = "AccessApproval"