Bump azure/setup-helm from 3.5 to 4 in the actions group

Bumps the actions group with 1 update: [azure/setup-helm](https://github.com/azure/setup-helm).


Updates `azure/setup-helm` from 3.5 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@v3.5...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/_helm.yml

@@ -11,7 +11,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup Helm
-        uses: azure/setup-helm@v3.5
+        uses: azure/setup-helm@v4
 
       - name: Setup chart-testing
         uses: helm/[email protected]