fix(deps): update dependency net.fabricmc:fabric-loader to v0.18.3

Author: renovate[bot]

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ miniplaceholders = "3.0.1"
 adventure = "4.24.0"
 adventurefabric = "6.6.0"
 
-fabric-loader = "0.17.2"
+fabric-loader = "0.18.3"
 fabric-api = "0.133.10+1.21.9"
 minecraft = "1.21.8"