Bump to 1.9

This is to indicate possibly changed mod behaviour (e.g. with KubeJS UI)

gradle.properties

@@ -6,7 +6,7 @@ supported_version=1.16.4/5
 
 archives_base_name=architectury
 archives_base_name_snapshot=architectury-snapshot
-base_version=1.8
+base_version=1.9
 maven_group=me.shedaniel
 
 fabric_loader_version=0.11.1