Upgrade to 2.0.20

[yalh76]

Problem

• https://github.com/advplyr/audiobookshelf/releases/tag/v2.0.19

Solution

• Upgrade

/!\ upgrade from version before example did remove all my settings, users and libraries. I’ve just to reconfigure them. Not a big issue.

PR Status

• [ ] Code finished and ready to be reviewed/tested
• [ ] The fix/enhancement were manually tested (if applicable)

Automatic tests

Automatic tests can be triggered on https://ci-apps-dev.yunohost.org/ after creating the PR, by commenting "!testme", "!gogogadgetoci" or "By the power of systemd, I invoke The Great App CI to test this Pull Request!". (N.B. : for this to work you need to be a member of the Yunohost-Apps organization)

[yalh76]

!testme

[yunohost-bot]

:carousel_horse: