Bump stefanprodan/helm-gh-pages from 1.4.1 to 1.5.0 (#4635)

Bumps [stefanprodan/helm-gh-pages](https://github.com/stefanprodan/helm-gh-pages) from 1.4.1 to 1.5.0.
- [Release notes](https://github.com/stefanprodan/helm-gh-pages/releases)
- [Commits](https://github.com/stefanprodan/helm-gh-pages/compare/f1701eb82e4d4b82016e7965501c8b6d79feaec9...b43a8719cc63fdb3aa943cc57359ab19118eab3f)

---
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>

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

.github/workflows/release-helm.yaml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@629c2de402a417ea7690ca6ce3f33229e27606a5 # v2
-    - uses: stefanprodan/helm-gh-pages@f1701eb82e4d4b82016e7965501c8b6d79feaec9
+    - uses: stefanprodan/helm-gh-pages@b43a8719cc63fdb3aa943cc57359ab19118eab3f
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         charts_dir: charts