Update Minecraft version to 1.21.5 stable, bump to 13.0.0

Author: Juuxel

gradle.properties

@@ -3,12 +3,12 @@ org.gradle.jvmargs=-Xmx1G
 
 # Fabric Properties
 # check these on https://fabricmc.net/develop
-	minecraft_version=1.21.5-rc1
-	yarn_mappings=1.21.5-rc1+build.3
+	minecraft_version=1.21.5
+	yarn_mappings=1.21.5+build.1
 	loader_version=0.16.10
 
 # Mod Properties
-	mod_version = 12.1.0
+	mod_version = 13.0.0
 	maven_group = io.github.cottonmc
 	archives_base_name = LibGui