chore(deps): Update dependency net.neoforged:neoforge to v21.8.29

Author: renovate[bot]

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ immutables = "2.11.1"
 minecraft = "1.21.8"
 fabricLoader = "0.16.14"
 fabricPermissionsApi = "0.4.1"
-neoforge = "21.8.13"
+neoforge = "21.8.29"
 neoform = "1.21.8-20250717.133445"
 adventureMod = "6.6.0"