fix: upgrade pnpm to v9 in GitHub Actions workflow

Match pnpm version with pnpm-lock.yaml format

Author: Jerry-CodeHub

.github/workflows/deploy.yml

@@ -19,9 +19,9 @@ jobs:
           node-version: '18'
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v2
+        uses: pnpm/action-setup@v4
         with:
-          version: 8
+          version: 9
 
       - name: Install dependencies
         run: pnpm install