Add prettier as deps and pin versions

Author: leaysgur

apps/oxfmt/package.json

@@ -36,7 +36,8 @@
     "dist"
   ],
   "dependencies": {
-    "@prettier/sync": "^0.6.1"
+    "prettier": "3.6.2",
+    "@prettier/sync": "0.6.1"
   },
   "devDependencies": {
     "@types/node": "^24.0.0",