bump ad-m/github-push-action from v0.6.0 to v0.8.0 (#33)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/changelog.yml

@@ -83,7 +83,7 @@ jobs:
           command git commit --verbose --message='update changelog' ||
             exit 0
       - name: Push changes
-        uses: ad-m/github-push-action@v0.6.0
+        uses: ad-m/github-push-action@v0.8.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN || secrets.PAT }}
           branch: ${{ github.ref }}