fix: improve CI workflow dependency installation

- Use pnpm/action-setup for proper pnpm setup
- Add Node.js setup with pnpm cache
- Remove duplicate dependency installation step
- Use --frozen-lockfile for consistent builds

Author: overtrue

.github/workflows/deploy.yml

@@ -34,11 +34,18 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Install dependencies
-        run: npm install -g pnpm && pnpm install
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 8
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'pnpm'
       - name: Install dependencies and build
         run: |
-          pnpm install --no-frozen-lockfile
+          pnpm install --frozen-lockfile
           pnpm run build
       - name: Install Aliyun OSS CLI
         if: startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/main'