Forge version updated.

Signed-off-by: Pavel Erokhin (MairwunNx) <MairwunNx@gmail.com>

Author: MairwunNx

gradle.properties

@@ -5,7 +5,7 @@ kotlin.code.style=official
 dev_run_client_path=run-client
 dev_run_server_path=run-server
 forge_gradle_version=3.+
-forge_version=1.14.4-28.1.114
+forge_version=1.15.2-31.1.1
 forge_mappings_channel_type=snapshot
 forge_mappings_channel_version=20190719-1.14.3
 brigadier_version=1.0.17