The source project of this merge request has been removed.
Add python3-qrcode to buildserver
@CiaranG fix for https://f-droid.org/wiki/index.php?title=org.mozilla.fennec_fdroid/lastbuild_851300&oldid=286887 so run makebuildserver after merge
FYI @bene64 @eighthave
Ref. !853 (merged)