Update dependency helm to v4 (#317)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/integrationtest.yaml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v5
         with:
-          version: v3.11.2
+          version: v4.2.2
 
       - uses: actions/setup-python@v6
         with:

.github/workflows/pullrequest.yaml

@@ -17,7 +17,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v5
         with:
-          version: v3.11.2
+          version: v4.2.2
 
       - uses: actions/setup-python@v6
         with:

.github/workflows/release.yaml

@@ -47,7 +47,7 @@ jobs:
       - name: Install Helm
         uses: azure/setup-helm@v5
         with:
-          version: v3.8.1
+          version: v4.2.2
 
       - name: Install helm-docs
         run: |