fix: remove version specification for pnpm action setup to use default version

Author: sai-aarna

.github/workflows/publish-mcp.yml

@@ -14,8 +14,6 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: pnpm/action-setup@v4
-        with:
-          version: 10
 
       - uses: actions/setup-node@v4
         with: