Bump github actions dependencies (#515)

Signed-off-by: Niclas Schad <[email protected]>

Author: nschad

.github/workflows/lint-test.yml

@@ -15,19 +15,17 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v3
         with:
-          version: v3.4.1
+          version: v3.12.1
 
       # Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
       # yamllint (https://github.com/adrienverge/yamllint) which require Python
-      - name: Set up Python
-        uses: actions/setup-python@v4
+      - uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: '3.10'
+          check-latest: true
 
       - name: Set up chart-testing
-        uses: helm/[email protected]
-        with:
-          version: v3.4.0
+        uses: helm/[email protected]
 
       - name: Run chart-testing (lint)
         run: ct lint --config ct.yaml
@@ -38,7 +36,7 @@ jobs:
           git diff --exit-code -- README.md
 
       - name: Create kind cluster
-        uses: helm/kind-action@v1.5.0
+        uses: helm/kind-action@v1.8.0
 
       - name: Run chart-testing (install)
         run: |