Storage transfer sas (#5006) (#3457)

* Fix incorrect nested object reference

* Skip sweepers

* Remove assuredworkloads sweeper

* Remove extra code

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/5006.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+storage: fixed a crash when `azure_credentials` was defined in `google_storage_transfer_job`
+```

google-beta/resource_assured_workloads_workload_sweeper_test.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/GoogleCloudPlatform/declarative-resource-client-library/dcl"
+	dcl "github.com/GoogleCloudPlatform/declarative-resource-client-library/dcl"
 	gkehub "github.com/GoogleCloudPlatform/declarative-resource-client-library/services/google/gkehub/beta"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/terraform"