[Koha] Koha 21.11.12 released

[Arthur Suzuki]

Hi dear Koha Community,

Koha 21.11.12 is a bugfix/maintenance release.

Apart from being a palindrome, it includes 10 enhancements, 37 bugfixes.

More information on the improvements : 
https://koha-community.org/koha-21-11-12-released
Much apologize for the delay on this particular release, BibLibre and I 
will do our best to release the next one on time.
Best,

-- 
Arthur Suzuki, 🌈🏔️
Développeur @BibLibre