[TASK] Remove support for v11.5 and add support for v13.0

[brotkrueml]

Additionally:

• Add PHP 8.3 to workflow matrix
• Use "ubuntu-latest" instead of "ubuntu-22.04" to avoid problems in the future
• Update "actions/checkout" to version 4
• Update dev dependencies

[linawolf]

@brotkrueml the tests are failing, please have a look

[brotkrueml]

@linawolf Yup, I know. It seems the "-t" option for "runTests.sh" isn't working (anymore?). Currently, don't know how to fix this, as the script hasn't changed? Maybe I will get rid of this option and let the workflow matrix provide the TYPO3 version.

[garvinhicking]

The script uses hardcoded version strings:

=~ ^(11.5|12.0|main)$ ]

If that gets adopted to 13.0 it might do?

[brotkrueml]

The script uses hardcoded version strings:

=~ ^(11.5|12.0|main)$ ]

If that gets adopted to 13.0 it might do?

Ah okay, haven't digged into it yet. Then the solution looks pretty easy. Thanks.