Bump azure/setup-helm from 3 to 4

Bumps [azure/setup-helm](https://github.com/azure/setup-helm) from 3 to 4.
- [Release notes](https://github.com/azure/setup-helm/releases)
- [Changelog](https://github.com/Azure/setup-helm/blob/main/CHANGELOG.md)
- [Commits](Azure/setup-helm@v3...v4)

---
updated-dependencies:
- dependency-name: azure/setup-helm
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build-chart.yml

@@ -36,7 +36,7 @@ jobs:
           echo "HELM_VERSION_TO_INSTALL=$HELM_VERSION_TO_INSTALL" >> $GITHUB_ENV
           echo $HELM_VERSION_TO_INSTALL
 
-      - uses: azure/setup-helm@v3
+      - uses: azure/setup-helm@v4
         with:
           version: ${{ env.HELM_VERSION_TO_INSTALL }}