chore(deps-dev): update dependency helm to v4

Author: renovate[bot]

.github/workflows/pr-build.yaml

@@ -25,7 +25,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 #v3.5
         with:
-          version: v3.21.1
+          version: v4.2.1
 
       - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with: