Minecraft Java 26.3 support

You can now join Cookie Build using Minecraft Java 26.3.

• Players using Minecraft Java 26.3 can now join Cookie Build.
• Previously supported older Java clients can continue to connect.
• Join the same games and keep your existing player progress.
• The server continues to use Minecraft 26.2 gameplay; this connection update does not add Minecraft 26.3 blocks or mechanics.