* fix languages in fcontest.php
* Fixed issue when color problem is updated, autojudge setting per problem is
  set to none.
* Update webcast.php
* Fix campo logip flog.php
* Ensure fifo files are not written to while cleaning dir in bocajail.

- Update php dependencies to PHP 8.3
- Update the source code to inform version 1.5.23
- Update boca-web maintainer script for PHP 8.3
- Adds Ubuntu mirror to the standard jail
- Patch standard jail fixing debootstrap problems with Ubuntu noble
- Purge the unecessary packages in the jail
- Perform a dist-upgrade after updating the jail
- Quote shell variables o prevent suprise splitting
- Replace obsolete backticks with `$( )`
- Modernise test commands, replacing `[ ]` with `[[ ]]`

Set the versions to 1.5.22. The program version was reported as 1.5.20-1
and 1.5.21.

There are no further coding changes.

The internal version info in the source files has been updated from
1.5.19-1 and 1.5.17 to 1.5.20-1 and 1.5.20. The year has also been
updated from 2023 to 2024.

The following files were updated to the next version to be released and
the current year:
- src/version
- src/versionnum.php