casync: update license from lgpl21 to lgpl21Plus

As per https://github.com/systemd/casync/blob/bd8898ed92685e12022dd33a04c87786b5262344/LICENSE.LGPL2.1#L479

+1 -1
+1 -1
pkgs/applications/networking/sync/casync/default.nix
··· 58 58 meta = with lib; { 59 59 description = "Content-Addressable Data Synchronizer"; 60 60 homepage = "https://github.com/systemd/casync"; 61 - license = licenses.lgpl21; 61 + license = licenses.lgpl21Plus; 62 62 platforms = platforms.linux; 63 63 maintainers = with maintainers; [ flokli ]; 64 64 };