Update labeler.json (#60843)

Add @Ethan-Arrowood to labeler list

Author: Ethan-Arrowood

.github/labeler.json

@@ -18,6 +18,7 @@
     "created-by: Next.js team": [
       { "type": "user", "pattern": "acdlite" },
       { "type": "user", "pattern": "balazsorban44" },
+      { "type": "user", "pattern": "Ethan-Arrowood" },
       { "type": "user", "pattern": "feedthejim" },
       { "type": "user", "pattern": "gnoff" },
       { "type": "user", "pattern": "huozhi" },