chore(ci): run tests on cherry-pick PRs (argoproj#694)

Signed-off-by: Michael Crenshaw <[email protected]>

Author: crenshaw-dev

.github/workflows/ci.yaml

@@ -8,6 +8,7 @@ on:
   pull_request:
     branches:
       - 'master'
+      - 'release-*'
 jobs:
   test:
     runs-on: ubuntu-latest