[Koha] Koha 21.11 release dates

[Jonathan Druart]

Hello everybody,

Here is the timeline for the 21.11 major release:

* Oct 29th - "Soft" feature freeze, nothing big or with high risk of
side-effects will be included into the final release if not marked as
Passed QA
* Nov 3-5 - "Hard" feature freeze, nothing considered as an
improvement will be pushed if not marked as Passed QA
* Nov 10th - String freeze, draft of release notes published
* Nov 17th - Only bug fixes considered major, critical or blocker
will be pushed
* Nov 26th - Final release

Let me know if you have any comments or modification requests!

Regards,
Jonathan