Use continuous-deploy SA in docker_pushes_watcher

Temporary solution to get docker_pushes_watcher working while we wait
for CLA whitelist in https://b.corp.google.com/issues/146778496

Bug: skia:9514
Change-Id: I237439aeb0f628787f46768922d02c9f3c0123e7
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/261552
Reviewed-by: Ravi Mistry <rmistry@google.com>
diff --git a/docker_pushes_watcher/go/docker_pushes_watcher/main.go b/docker_pushes_watcher/go/docker_pushes_watcher/main.go
index 9d6bca2..9ced018 100644
--- a/docker_pushes_watcher/go/docker_pushes_watcher/main.go
+++ b/docker_pushes_watcher/go/docker_pushes_watcher/main.go
@@ -255,7 +255,8 @@
 
 	// Create git-cookie if not local.
 	if !*local {
-		_, err := gitauth.New(ts, "/tmp/git-cookie", true, "skia-docker-pushes-watcher@skia-public.iam.gserviceaccount.com")
+		// TODO(rmistry): Use skia-docker-pushes-watcher SA after b/146778496 is resolved.
+		_, err := gitauth.New(ts, "/tmp/git-cookie", true, "skia-continuous-deploy@skia-public.iam.gserviceaccount.com")
 		if err != nil {
 			sklog.Fatal(err)
 		}