Bump helm/chart-testing-action from 1.0.0 to 2.4.0 (#295)

Bumps [helm/chart-testing-action](https://github.com/helm/chart-testing-action) from 1.0.0 to 2.4.0.
- [Release notes](https://github.com/helm/chart-testing-action/releases)
- [Commits](helm/chart-testing-action@v1.0.0...v2.4.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/lint-test.yaml

@@ -14,7 +14,7 @@ jobs:
 
       - name: Run chart-testing (lint)
         id: lint
-        uses: helm/chart-testing-action@v1.0.0
+        uses: helm/chart-testing-action@v2.4.0
         with:
           command: lint
 
@@ -23,6 +23,6 @@ jobs:
         if: steps.lint.outputs.changed == 'true'
 
       - name: Run chart-testing (install)
-        uses: helm/chart-testing-action@v1.0.0
+        uses: helm/chart-testing-action@v2.4.0
         with:
           command: install