Update helm/chart-testing-action action to v2.2.1 (#336)

Signed-off-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

.github/workflows/lint-test.yml

@@ -25,7 +25,7 @@ jobs:
           python-version: 3.7
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.2.0
+        uses: helm/chart-testing-action@v2.2.1
         with:
           version: v3.4.0