ci: drop explicit pnpm version, rely on packageManager field

Author: Charliechen114514

.github/workflows/deploy.yml

@@ -29,8 +29,6 @@ jobs:
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
-        with:
-          version: 10
 
       - name: Setup Node.js
         uses: actions/setup-node@v4