Announcing LTSP and Epoptes 23.01

Copied from https://github.com/ltsp/ltsp/issues/1#issuecomment-1397954759
Happy new year to all!
And as always, special thanks to Vagrant for uploading to Debian.

## Announcing LTSP 23.01

A new version LTSP 23.01 is available in the [proposed 
PPA](https://ltsp.org/advanced/proposed-ppa/). Please test and verify 
that it doesn't cause any issues for you, as it will be uploaded in the 
[stable PPA](https://ltsp.org/docs/ppa/) and in [Debian 
testing](https://packages.debian.org/testing/ltsp) in a few days.

Changelog from the previous version:

   * Search for new memtest86+ binaries (#783)
   * Don't chmod -x epoptes anymore
   * Avoid systemd lingering (#778)
   * Avoid broken pipe warning (#767)
   * Better sssd autodetection (#749)
   * Support arctica-greeter (#742)
   * Search for DISABLE_SYSTEM_SERVICES in /lib too (#690)


Also, copied from 
https://github.com/epoptes/epoptes/issues/1#issuecomment-1397956393

## Announcing Epoptes 23.01

A new Epoptes 23.01 version is available in the [proposed 
PPA](https://epoptes.org/documentation/ppa/). Please test and verify 
that it doesn't cause any issues for you, as it will be uploaded in the 
[stable PPA](https://epoptes.org/documentation/ppa/) and in [Debian 
testing](https://packages.debian.org/testing/epoptes) in a few days.

Changelog from the previous version:

   * Avoid thumbshot.py crashes on wayland (#184)
   * Bump benchmark timeout from 3 to 5 sec
   * Remove constraints unnecessary since buster (#152)
   * Import translations from launchpad
   * Use iperf --full-duplex for benchmark (#183)
   * Update chat room URL (#168)
   * Run epoptes over SSH socket forwarding (#182)
   * Make "Execute command" translatable (#181)
   * Optimize wait_for_dns (#179)
   * Support a main epoptes server
   * Silence x11vnc
   * Use the main mac address (#178)
   * Avoid xwininfo hangs (#177)
   * If SERVER is an MDNS name, retry indefinitely (#162)
   * Work around broken output in recent iperf versions (#164)
   * Allow controlling specific groups (#159)
   * Use relative Exec=epoptes path (#158)


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