Better Anti Dupe

[3.5.1] - 2026-07-08

Load fix for Paper 1.21.11.

Fixed

• Plugin failed to load on Paper 1.21.11. The shaded jar carried duplicate META-INF resources (Netty's io.netty.versions.properties and a BlockHound service file, both pulled in transitively by lettuce-core), which Paper's plugin remapper rejects with a "Duplicate entries detected" error. These redundant entries are now dropped from the jar — the server provides its own Netty at runtime — so the plugin loads normally again. Thanks to imSpartann for the report (#1).