chore: bump stefanprodan/helm-gh-pages from 1.6.0 to 1.7.0 (#485)

Bumps [stefanprodan/helm-gh-pages](https://github.com/stefanprodan/helm-gh-pages) from 1.6.0 to 1.7.0.
- [Release notes](https://github.com/stefanprodan/helm-gh-pages/releases)
- [Commits](stefanprodan/helm-gh-pages@v1.6.0...v1.7.0)

---
updated-dependencies:
- dependency-name: stefanprodan/helm-gh-pages
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

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

.github/workflows/release.yaml

@@ -93,7 +93,7 @@ jobs:
           prerelease: false
 
       - name: Publish Helm chart
-        uses: stefanprodan/helm-gh-pages@v1.6.0
+        uses: stefanprodan/helm-gh-pages@v1.7.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           charts_dir: charts