Forge dependency updated to 31.2.0.

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

Author: MairwunNx

gradle.properties

@@ -6,7 +6,7 @@ org.gradle.caching=true
 forge_mappings_channel_type=snapshot
 forge_mappings_channel_version=20190719-1.14.3
 # Forge dependencies.
-forge_version=1.15.2-31.1.0
+forge_version=1.15.2-31.2.0
 brigadier_version=1.0.17
 # Project compatibility settings.
 kotlin_jdk_version_target=jdk8