chore(deps): update helm/chart-testing-action action to v2.7.0

Author: renovate[bot]

.github/workflows/lint_test_charts.yaml

@@ -29,7 +29,7 @@ jobs:
           fetch-depth: 0
 
       - uses: actions/setup-python@v5
-      - uses: helm/chart-testing-action@v2.6.1
+      - uses: helm/chart-testing-action@v2.7.0
       - uses: azure/setup-helm@v4
         with:
           version: 'v3.2.0'
@@ -73,7 +73,7 @@ jobs:
           fetch-depth: 0
 
       - uses: actions/setup-python@v5
-      - uses: helm/chart-testing-action@v2.6.1
+      - uses: helm/chart-testing-action@v2.7.0
       - uses: azure/setup-helm@v4
         with:
           version: 'v3.2.0'