Minecraft 1.21 released on Github but not in Maven repository

[brainage04]

I've been looking for a config library and I noticed that the latest release (https://github.com/Draylar/omega-config/releases/tag/1.4.4-1.21) of this config library supports 1.21, which is what I need. However, when I try to retrieve this version from the maven repository (I tried 1.4.4+1.21 and 1.4.4-1.21), it does not exist.

Unless I'm looking in the wrong place, it seems it is not actually in the maven repository:

I just thought I should let someone know.