chore(deps): Update dependency net.fabricmc:fabric-loader to v0.18.4

Author: renovate[bot]

gradle/libs.versions.toml

@@ -12,7 +12,7 @@ geantyref = "1.3.16"
 immutables = "2.12.1"
 
 minecraft = "1.21.11"
-fabricLoader = "0.18.2"
+fabricLoader = "0.18.4"
 fabricPermissionsApi = "0.6.1"
 neoforge = "21.11.0-beta"
 neoform = "1.21.11-20251209.172050"