Update composer.json

composer.json

@@ -16,7 +16,7 @@
         "laravel/framework": "5.6.*",
         "laravel/horizon": "^1.2",
         "laravel/tinker": "^1.0",
-        "league/fractal": "^0.17.0",
+        "pixelfed/fractal": "^0.18.0",
         "phpseclib/phpseclib": "~2.0",
         "predis/predis": "^1.1",
         "spatie/laravel-backup": "^5.0.0",