Merge branch 'release/2.6.91' into 'master'

2.6.91 release

See merge request ProtonVPN/android/android-app-new!302

2.6.44.5 with TV server list

2.6.4.2 with NetShield

Merge branch 'master' into release-2.6.0

Android TV release

Add F-droid metadata for 2.4.31.0 release

Fix incorrect version code

2.3.54.0 with connectivity improvements

2.3.12.0 with connectivity improvements

2.2.3 F-droid build hotfix