ci: bump chart-testing-action to 2.6.1

Author: yorugac

.github/workflows/helm-lint.yaml

@@ -32,7 +32,7 @@ jobs:
           python-version: 3.7
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.2.0
+        uses: helm/chart-testing-action@v2.6.1
 
       - name: Run chart-testing (lint)
         run: |

.github/workflows/helm-test.yaml

@@ -30,7 +30,7 @@ jobs:
           python-version: 3.7
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.2.0
+        uses: helm/chart-testing-action@v2.6.1
 
       - name: Run chart-testing (list-changed)
         id: list-changed