bump to 1.20

gradle.properties

@@ -3,10 +3,10 @@ org.gradle.jvmargs=-Xmx1G
 maven_group=com.terraformersmc
 archive_name=modmenu
 
-minecraft_version=23w17a
-yarn_mappings=23w17a+build.2
-loader_version=0.14.19
-fabric_version=0.79.1+1.20
+minecraft_version=1.20
+yarn_mappings=1.20+build.1
+loader_version=0.14.21
+fabric_version=0.83.0+1.20
 quilt_loader_version=0.17.7
 
 # Project Metadata
@@ -20,7 +20,7 @@ default_release_type=stable
 # Modrinth Metadata
 modrinth_slug=modmenu
 modrinth_id=mOgUt4GM
-modrinth_game_versions=23w17a
+modrinth_game_versions=1.20
 modrinth_mod_loaders=fabric, quilt
 
 # Mod Loader Metadata