chore(deps): bump helm/chart-testing-action

Bumps the github-actions-dependencies group with 1 update in the /actions/helm/test-chart directory: [helm/chart-testing-action](https://github.com/helm/chart-testing-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)

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

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

actions/helm/test-chart/action.yml

@@ -78,7 +78,7 @@ runs:
         python-version: "3.12"
 
     - name: Set up chart-testing
-      uses: helm/chart-testing-action@v2.6.1
+      uses: helm/chart-testing-action@v2.7.0
 
     - shell: bash
       run: |