chore(deps): update azure/setup-helm action to v2 (coder#5088)

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Joe Previte <jjprevite@gmail.com>

Author: 3 people

.github/workflows/ci.yaml

@@ -39,7 +39,7 @@ jobs:
           node-version: "14"
 
       - name: Install helm
-        uses: azure/setup-helm@v1.1
+        uses: azure/setup-helm@v2.1
 
       - name: Fetch dependencies from cache
         id: cache-yarn