* Update checksum and upstream URL (#11)
Upstream URL changed, this is mentioned in this week's edition of TWIM:
https://matrix.org/blog/2021/08/06/this-week-in-matrix-2021-08-06#mautrix-
* Fix upgrade script (#14)
The destination directory for upgrade source was wrong, so upgrading would reinstall the previous version.
* add default-jre-headless
* upgrade pip
* Update config.yaml
* Add mautrix_signal to the signald group, set permissions
Unfortunately signald creates folders with the wrong permissions, so
there is still an issue with sticker subfolders.
Co-authored-by: Mayeul Cantan <mayeul.cantan@gmail.com>
