build(deps): bump helm/chart-testing-action from 2.4.0 to 2.6.1

Bumps [helm/chart-testing-action](https://github.com/helm/chart-testing-action) from 2.4.0 to 2.6.1.
- [Release notes](https://github.com/helm/chart-testing-action/releases)
- [Commits](helm/chart-testing-action@v2.4.0...v2.6.1)

---
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/pr-packaging.yml

@@ -20,7 +20,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.4.0
+        uses: helm/chart-testing-action@v2.6.1
 
       # FIXME
       #- name: Run chart-testing (list-changed)

.github/workflows/release.yml

@@ -96,7 +96,7 @@ jobs:
           go-version: ${{ env.VERSION_GOLANG }}
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.4.0
+        uses: helm/chart-testing-action@v2.6.1
 
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v3