[ANNOUNCE] dbus-broker v29

[David Rheinsberg]

Hi

We just released v29 of dbus-broker. It contains a handful of bug
fixes, as well as updates to the libaudit and libselinux dependencies.
Lastly, support for pre-4.17 kernels was dropped.

All users are recommended to upgrade!

https://github.com/bus1/dbus-broker/releases/tag/v29

## CHANGES WITH 29:

* Improve SELinux audit messages. This requires the new libselinux-3.2
and libaudit-3.0 releases. If audit/selinux support is enabled, those
are now the minimum required versions.

* Make linux-4.17 a hard-requirements. Older kernels are no longer
supported.

* Fix startup failures when at-console users have consecutive uids.

Contributions from: Chris PeBenito, David Rheinsberg, Thomas Mühlbacher

- Dußlingen, 2021-06-02