games/minecraft-server: Update 1.21.11 => 26.1.2

Changelogs:
https://www.minecraft.net/en-us/article/minecraft-java-edition-26-1
https://www.minecraft.net/en-us/article/minecraft-java-edition-26-1-1
https://www.minecraft.net/en-us/article/minecraft-java-edition-26-1-2

PR: 294942
Approved by: Jonathan Price <freebsd@jonathanprice.org> (maintainer, implicit)
Sponsored by: UNIS Labs
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>