Pin helm version to 4.0.1

Author: javorszky

.github/workflows/version-bump.yml

@@ -31,6 +31,11 @@ jobs:
       id-token: write
     runs-on: ubuntu-24.04
     steps:
+      - name: Setup Helm
+        uses: azure/setup-helm@1a275c3b69536ee54be43f2070a358922e12c8d4 # v4.3.1
+        with:
+          version: 'v4.0.1'
+
       - name: Checkout Repository
         uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: