fix(ci): remove redundant pnpm version to avoid conflict

The pnpm/action-setup version field conflicted with the
packageManager field in package.json, causing CI failures.

Made-with: Cursor

Author: MinimaxLanbo

.github/workflows/ci.yml

@@ -14,8 +14,6 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
 
       - uses: actions/setup-node@v4
         with: