Release 2.5

Additions

• Spigot 1.20.5 support.
• Bump velocity version, and drop older version support. Make sure you're on the latest velocity.

Bug fixes

• Fixed updatechecker problems completely.
• Fixed left-over debugging that may spam the console under certain conditions.
• Remove duplicate classes in universal jar.
• Server treats the plugin as a legacy plugin.

Internal Changes

• Changed plugin's package to dev.bluetree242.advancedplhide.
• Update gradle & some plugins.
• Switch to Gradle Kotlin DSL.
• Use gradle plugin to generate plugin.yml for jar.
• Use libs.versions.toml for dependency declaration.
• Other changes to improve code quality.