Dependencies updated.

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

Author: MairwunNx

gradle.properties

@@ -11,12 +11,13 @@ forge_mappings_channel_version=20190719-1.14.3
 brigadier_version=1.0.17
 kotlin_jdk_version_target=jdk8
 project_jvm_version_target=1.8
-kotlin_version=1.3.61
-kotlinx_serialization_version=0.14.0
-dokka_version=0.10.0
-permissions_version=v1.14.4-1.+
-cooldown_version=v1.14.4-1.+
-module_version=1.15.2-1.0.0
+kotlin_version=1.3.70
+kotlinx_serialization_version=0.20.0
+dokka_version=0.10.1
+gson_version=2.8.6
+permissions_version=v1.15.2-1.+
+cooldown_version=v1.15.2-1.+
+module_version=1.15.2-1.1.0
 module_name=Project Essentials Core
 module_id=project_essentials_core
 module_vendor=MairwunNx (Pavel Erokhin)