Upgrade release script to support release branch
Upgrade release script to support release branch

Chocobozzz/PeerTube,Chocobozzz/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube,Green-Star/PeerTube,Green-Star/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube