fix: try GH Action with pnpm

Author: portalhacker

.github/workflows/deploy.yml

@@ -34,7 +34,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 20
-          cache: 'npm'
+          cache: 'pnpm'
       - name: Install dependencies
         run: npm ci
       - name: Build