Merge branch 'firefox-mobile' into 'pureos/byzantium'

byzantium: Add firefox-esr-mobile-config

See merge request Librem5/deb-build-jobs!295

byzantium.yml

@@ -6,6 +6,8 @@ calls: {}
 cawbird:
   url: https://source.puri.sm/Librem5-apps/cawbird.git
 chatty: {}
+firefox-esr-mobile-config:
+  url: https://source.puri.sm/Librem5/debs/firefox-esr-mobile-config.git
 flash-kernel: {}
 geary:
   url: https://source.puri.sm/Librem5/debs/geary.git