chore(deps): bump ad-m/github-push-action from 0.6.0 to 0.8.0 (#8352)

Bumps [ad-m/github-push-action](https://github.com/ad-m/github-push-action) from 0.6.0 to 0.8.0.
- [Release notes](https://github.com/ad-m/github-push-action/releases)
- [Commits](ad-m/github-push-action@v0.6.0...v0.8.0)

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

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

.github/workflows/cd-helm.yml

@@ -48,7 +48,7 @@ jobs:
         run: git checkout -b gh-pages-pull-request
 
       - name: Push changes to gh-pages-pull-request branch # It will silently fail if pull request already exists
-        uses: ad-m/github-push-action@v0.6.0
+        uses: ad-m/github-push-action@v0.8.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           branch: gh-pages-pull-request