Fixed bungeecord support that broke due to changes in bungeecord#18

Merged

robinbraemer merged 6 commits intominekube:connectfrom

NixNux123:bungee-channelinitalizer-api-port

Apr 4, 2025

Commits on Apr 4, 2025

- Ported some changes from geyser/floodgate where they switched to the new [BungeeCord ChannelInitializer API](https://github.com/SpigotMC/BungeeCord/pull/3776)
NixNux123
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Updated the pullrequest workflow to use upload-artifact@v4 instead of the deprecated v2
NixNux123
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Forgot to delete an old util file that is no longer needed because of the BungeeCord ChannelInitializer API
NixNux123
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Removed an unused class related to skins that caused an error on Java 8
NixNux123
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Merge remote-tracking branch 'origin/bungee-channelinitalizer-api-port' into bungee-channelinitalizer-api-port
NixNux123
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Upgraded push request workflow to java 17
NixNux123
committed