Bug#987120: [libtorrent-rasterbar10] Please update - security fixes

[Lyndon Brown]

Package: libtorrent-rasterbar10
Version: 1.2.9-0.2+b2
Tags: security

Version 1.2.12 (released 5th Jan 2021) includes some security fixes,
per [1].

[1]: https://libtorrent.org/security-audit.html