fix(ci): pin helm v3 version to avoid plugin issues with helm v4

Author: Frederic Spiers

.github/workflows/pull-request.yaml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - name: Setup Helm
         uses: Azure/setup-helm@v4.3.1
+        with:
+          version: 'v3.19.2'
 
       - name: Checkout pull request branch
         uses: actions/checkout@v5.0.0
@@ -151,6 +153,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: azure/setup-helm@v4.3.1
+        with:
+          version: 'v3.19.2'
 
       - name: Checkout pull request branch
         uses: actions/checkout@v5.0.0
@@ -160,7 +164,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up chart-testing-action
-        uses: helm/chart-testing-action@v2.7.0
+        uses: helm/chart-testing-action@v2.8.0
 
       - name: Get changed charts
         id: list-changed