Update obfs4 to version 0.0.13 / rev 2 via SR 951752
https://build.opensuse.org/request/show/951752
by user jonapap + dimstar_suse
- Update to version 0.0.13:
* Stop using utls entirely for TLS signature normalization (meek_lite).
* Stop pinning the certificate chain for default bridges (meek_lite).