add missing setup pnpm step

.github/workflows/deploy.yaml

@@ -28,13 +28,17 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+      - name: pnpm-setup
+        uses: pnpm/action-setup@v3
+        with:
+          version: 8
       - name: Setup Nodejs
         uses: actions/setup-node@v3
         with:
           node-version: 18
           cache: 'pnpm'
       - name: Install deps
-        run: pnpm
+        run: pnpm install
       - name: Build
         run: pnpm build
       - name: Setup Pages