fix(gitops-bump): rebase and retry when another deploy pushed first

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

gitops-bump/action.yaml

@@ -37,4 +37,12 @@ runs:
         cd "$DIR"
         git -c user.name=ci-bot -c user.email=ci-bot@forgejo.local \
           commit -am "${{ inputs.app-name }}: deploy $TAG" || { echo "tag unchanged, nothing to deploy"; exit 0; }
-        git push
+        # Another app's deploy may push first: rebase (touches a different dir) and retry.
+        for i in 1 2 3 4 5; do
+          git push && exit 0
+          echo "push rejected (attempt $i), rebasing"
+          sleep $((i * 2))
+          git pull --rebase
+        done
+        echo "gitops push failed after 5 attempts" >&2
+        exit 1