v2.0.0

Paper 26.1 compatibility update. Drops support for 1.21.x.

Dependencies:

• paper-api 1.21 → 26.1.2.build.61-stable
• java.version 21 → 25
• YskLib 1.6.9 → 1.9.0
• FoliaLib 0.5.1 → 0.5.2