chore(deps): bump helm/chart-testing-action from 2.6.1 to 2.7.0

Bumps [helm/chart-testing-action](https://github.com/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)

---
updated-dependencies:
- dependency-name: helm/chart-testing-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/charts.yml

@@ -47,7 +47,7 @@ jobs:
       - name: Setup Chart Linting
         if: ${{ github.event_name == 'pull_request' }}
         id: lint
-        uses: helm/chart-testing-action@v2.6.1
+        uses: helm/chart-testing-action@v2.7.0
       - name: Run chart-testing (list-changed)
         if: ${{ github.event_name == 'pull_request' }}
         id: list-changed