[horde] horde_histories not-null constraint

[Ralf Lang]

Hallo Hannes,

Am 16.12.2022 um 16:26 schrieb Hannes Tismer:
> Hey Ralf,
>
> Thank you!
>
> I've also had to move to a bionic container instead of directly 
> running on my 22.04 LTS host, due to my previous email to this list.
>
> I'm guessing there's still compatibility issues with certain libs on 
> 22.04 that won't work with horde (OpenSSL 3?).
>
> For now it runs well. The only issue that remains is the Kronolith one.
>
There are some openssl related fixes in the git-master branch which are 
unreleased for Horde 5.2 - they address incompatibilities with newer 
openssl versions.
These are originally by Michael Rubinsky I think.