ci: fix pnpm version conflict — use packageManager field

Made-with: Cursor

Author: jonzarecki

.github/workflows/ci.yml

@@ -15,8 +15,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: pnpm/action-setup@v4
-        with:
-          version: 10
+        # version is read from packageManager field in package.json
 
       - uses: actions/setup-node@v4
         with: