Add python-magic

[bbhtt]

https://github.com/flathub/flatpak-external-data-checker/pull/335

[flathubbot]

Started test build 80079

[bbhtt]

The autoupdate to latest commit broke the flatpak https://github.com/flathub/org.flathub.flatpak-external-data-checker/pull/226

It should not auto update to latest random commits from master branch of x-checker...

[flathubbot]

Build 80079 failed

[bbhtt]

bot, build

[flathubbot]

Queued test build for org.flathub.flatpak-external-data-checker.

[flathubbot]

Started test build 80110

[flathubbot]

Build 80110 successful To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/62732/org.flathub.flatpak-external-data-checker.flatpakref