Add 1.21.11-neoforge

Author: tr7zw

settings.json

@@ -36,6 +36,7 @@
         "1.21.10-forge",
         "1.21.10-neoforge",
         "1.21.10-fabric",
+        "1.21.11-neoforge",
         "1.21.11-fabric"
     ]
 }