[Koha] Koha 3.18.13 Released

[Liz Rea]

The Koha team is pleased to announce the happy holiday release of Koha
3.18.13.

Please refrain from putting down your holiday beverage of choice to install
this version, it will be waiting for you when you get back from your time
away. :)

As always, the release notes are available at
https://koha-community.org/release-notes-for-koha-3-18-13/

Have a very jolly holiday period, stay safe, and we'll see you all back in
the new year, when I know you are all going to be refreshed and ready to
contribute patches, signoffs, opinions, and good humour to the Koha
community.

Liz