v0.2+1.20.4 - Update to 1.20.4 & Fixes

Mery Crhistmas!
This update brings the mod to 1.20.4 alongside various fixes (add some padding, a mod icon and remove FAPI as a dependency)

Modrinth: https://modrinth.com/mod/server-chat-heads/version/0.2
Full Changelog: v0.1+1.19.2...v0.2+1.20.4