Pontoon: Update Setswana (tn) localization of Common Voice
Pontoon: Update Setswana (tn) localization of Common Voice

Co-authored-by: setswana2 <460e0160f047693f414b6f0dab11e128ba7df005@uliza.org>

common-voice/common-voice,common-voice/common-voice,common-voice/common-voice,common-voice/common-voice