* 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 `[[ ]]`

Bump version only for upload.

Release version 1.5.21-2+ubuntu24.04 for Ubuntu Noble 24.04 LTS.

Simultaneosly releases boca 1.4.21 for Ubuntu 24.04 Noble and 22.04
Jammy. This release fixes the PPA repository added to the system.

Besides the project's migration to Ubuntu Noble 24.04 LTS, the following
changes were also included on this release:

* Daniel Saad Nogueira Nunes
    * Update webcast.php (#34)
    * webcast.php: fixing FS separador character. (#40)
* Gatuno
    * New autojudge setting on interface per problem. (#41)
* Davi Antônio da Silva Santos
    * Drop dependency on logkeys
    * Update internal version info to 1.5.20

* Update version info and year

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

* Release 1.5.17-1

Update changelog with all the changes made since its last update on
commit 818abd88.

* Format code with black 23.1.0

* Release 1.5.18-1

Update changelog with all the changes made since its last update on
commit 194f6764.

* Fix src/version pointing to older version

* Release 1.5.19-1

Update changelog with all the changes made since its last update on
commit 991cb0e.

* Update version info and year

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

* Release 1.5.17-1

Update changelog with all the changes made since its last update on
commit 818abd88.

* Format code with black 23.1.0

* Release 1.5.18-1

Update changelog with all the changes made since its last update on
commit 194f6764.

* Update version info and year

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

* Release 1.5.17-1

Update changelog with all the changes made since its last update on
commit 818abd88.