Update Fabric loader for new versions

This is just to get the workflows to pass. It seems I'll need to make some changes to the update workflow to better respect version ranges as well.

gradle.properties

@@ -8,7 +8,7 @@ java_version=21
 # check these on https://fabricmc.net/develop
 minecraft_version=1.21.2
 yarn_mappings=1.21.2+build.1
-loader_version=0.16.7
+loader_version=0.16.9
 
 # Mod Properties
 # Note: this version number is updated during release