I've swapped the secondary dev.toolforge.org bastion to a new server running Debian 12. As usual, the new SSH fingerprints have been published on Wikitech[0].
The new bastion no longer has the full list of packages installed that were required for Grid Engine usage. If there is a package missing from the new bastion that you would find useful, please file a new Phabricator task in the Toolforge project[1].
If there are no major issues found I will also swap the main login.toolforge.org bastion to a new server in a few days. I'll send a separate announcement when that happens.
[0]: https://wikitech.wikimedia.org/wiki/Help:SSH_Fingerprints/dev.toolforge.org [1]: https://phabricator.wikimedia.org/tag/toolforge/
Taavi