1.20.5 support

[lunakittyyy]

I think I like this mod a little too much

• Updates Loom version to one compatible with 1.20.5
• Updates the gradle wrapper to one that successfully builds with new loom version
• Bumps depends version numbers

Requires Java 21 to compile (since 1.20.5 hopped to it). Kotlin target JVM is still set to 17 in build.gradle because it complains if its 21 - I'm unsure if this is easily fixable or not but it works ingame so :woman_shrugging:

I am still inexperienced with Java and Kotlin, I probably forgot or missed some stuff or potentially did something bad, so feel free to make any edits as needed ^.^

[lunakittyyy]

1.20.6 is a hotfix for a single bug, this should work on it too