net/sslh: update to 1.22c
Most notably, sslh now supports UDP and, thus, QUIC and Teamspeak.
For the release announcement see:
https://lists.rutschle.net/mailman/archives/sslh/2021-August/000744.html
While at it:
- Give the sample configuration file @sample treatment.
- Install all remaining example configuration files as EXAMPLES.
- Make the EXAMPLES knob actually work as intended by not installing corresponding files when it's off.
- Refresh pkg-descr.
PR: 261067
Approved by: maintainer timeout