Update helm/chart-testing-action action to v2.2.1 (#1918)

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

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Willy Lulciuc <willy@datakin.com>

Author: 3 people

.github/workflows/test-chart.yaml

@@ -24,7 +24,7 @@ jobs:
           python-version: 3.7
 
       - name: Setup chart-testing
-        uses: helm/chart-testing-action@v2.2.0
+        uses: helm/chart-testing-action@v2.2.1
 
       - name: Run chart-testing (list-changed)
         id: list-changed