Update 1.21

[Yukino12333]

Is your feature request related to a problem?

I want to use version 1.21 to open the server

Describe the solution you'd like.

Update 1.21

Describe alternatives you've considered.

Update 1.21.1

Other

Love you

[PureGero]

Hi, 1.21 will come once Paper is more stable. From what I can tell, there's still a few chunk issues with 1.21 at the moment :)

[DaddyRobLIVE]

It's stable now: https://papermc.io/downloads/paper