Servux

• Update to Minecraft 1.20.5 and 1.20.6 (by Sakura-Ryoko)
• Various changes due to vanilla code changes. See the git commit history or diff against 1.20.4 if you want more details: https://github.com/sakura-ryoko/servux/

Note: This update is entirely the work of Sakura-Ryoko. I don't currently have any plans to update my mods anymore from the old "pre-rewrite" code for any MC versions after 1.20.4. And there is currently no ETA for if/when the "new code" might be ready, if ever.