Update to libGDX 1.9.12.

Author: crykn

build.gradle

@@ -4,7 +4,7 @@ apply plugin: "idea"
 apply plugin: "jacoco"
 apply plugin: "maven"
 
-version '0.6.3'
+version '0.6.4'
 
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
@@ -54,8 +54,8 @@ install {
 
 // DEPENDENCIES
 ext {
-	gdxVersion = "1.9.11"
-	guacamoleVersion = "0.2.2"
+	gdxVersion = "1.9.12"
+	guacamoleVersion = "0.2.3"
 	junitVersion = "5.6.0"
 	mockitoVersion = "3.4.4"
 }