Block github tagging on push-apk (#15546)

Currently, push-apk fails to verify its chain of trust if github tagging
is done before it runs. Until this is fixed, we need to make sure
tagging is blocked on pushing.

taskcluster/ci/github-release/kind.yml

@@ -10,6 +10,9 @@ transforms:
     - taskgraph.transforms.task:transforms
 
 kind-dependencies:
+    # To work around a race condition where if this runs before
+    # push-apk, push-apk fails to verify chain of trust
+    - push-apk
     - signing
 
 primary-dependency: signing