chore(deps): bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [helm/chart-testing-action](https://github.com/helm/chart-testing-action) and [helm/kind-action](https://github.com/helm/kind-action).


Updates `helm/chart-testing-action` from 2.6.1 to 2.7.0
- [Release notes](https://github.com/helm/chart-testing-action/releases)
- [Commits](helm/chart-testing-action@v2.6.1...v2.7.0)

Updates `helm/kind-action` from 1.8.0 to 1.13.0
- [Release notes](https://github.com/helm/kind-action/releases)
- [Commits](helm/kind-action@v1.8.0...v1.13.0)

---
updated-dependencies:
- dependency-name: helm/chart-testing-action
  dependency-version: 2.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
- dependency-name: helm/kind-action
  dependency-version: 1.13.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/helm.yml

@@ -38,10 +38,10 @@ jobs:
         uses: azure/setup-helm@v4
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.6.1
+        uses: helm/chart-testing-action@v2.7.0
 
       - name: Create kind cluster
-        uses: helm/kind-action@v1.8.0
+        uses: helm/kind-action@v1.13.0
         with:
           cluster_name: postgres-upgrade-test