Bump version

gradle.properties

@@ -2,6 +2,6 @@ minecraft_version=20w17a
 yarn_mappings=20w17a+build.8
 loader_version=0.8.2+build.194
 fabric_version=0.6.2+build.327-1.16
-mod_version=4.0.3-unstable
+mod_version=4.0.4-unstable
 modmenu_version=1.11.0+build.2
 nec_version=1.2.3+1.15.1