[tor-relays] security update for obfs4proxy

Hello,

The latest version of obfs4proxy (0.0.14) comes with an important security fix. If you are running a obfs4 Tor bridge please upgrade as soon as possible.

If you use debian you can find the Debian package in stable-backports: https://packages.debian.org/stable-backports/obfs4proxy

If you use docker you'll find the latest version in docker hub: https://hub.docker.com/r/thetorproject/obfs4-bridge/

Or you can find the source code in the upstream repository: https://gitlab.com/yawning/obfs4

If you need help upgrading your relay, please use this mailing list or the Tor Forum: https://forum.torproject.net/c/support/relay-operator/17

We appreciate a lot your effort and time!

Thank you