Bump to 1.9.rc3

Translated using Weblate (Arabic)

Currently translated at 100.0% (121 of 121 strings)

Translation: EtchDroid/EtchDroid
Translate-URL: https://hosted.weblate.org/projects/etchdroid/app/ar/

Fix build warnings

Last release with DMG support

Version 1.4

Version 1.3.4

Version 1.3.32

Version 1.3.31