Run firefox-ci tasks on generic worker too

Author: marco-c

.taskcluster.yml

@@ -66,7 +66,7 @@ tasks:
 
     workerType:
       $if: 'taskcluster_root_url == "https://firefox-ci-tc.services.mozilla.com"'
-      then: linux-gcp
+      then: linux-gw-gcp
       else: generic-worker-ubuntu-22-04
 
     taskboot_image: "mozilla/taskboot:0.4.1"