Bump ad-m/github-push-action (#29)

Bumps [ad-m/github-push-action](https://github.com/ad-m/github-push-action) from 887c31bd838a40c4da09953b6df364b5439bd7c3 to 77c5b412c50b723d2a4fbc6d71fb5723bcd439aa.
- [Release notes](https://github.com/ad-m/github-push-action/releases)
- [Commits](ad-m/github-push-action@887c31b...77c5b41)

---
updated-dependencies:
- dependency-name: ad-m/github-push-action
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/refresh-listing.yaml

@@ -56,7 +56,7 @@ jobs:
           git commit -a -m "Automated build"
 
       - name: Publish changes to master branch
-        uses: ad-m/github-push-action@887c31bd838a40c4da09953b6df364b5439bd7c3
+        uses: ad-m/github-push-action@77c5b412c50b723d2a4fbc6d71fb5723bcd439aa
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           branch: master