chore: bump ubuntu version

[pfeerick]

Bump to Ubuntu 24.04 LTS

Testing the waters... waiting until 24.04.1 before going any further with this.

 E: Unable to locate package python3-clang-10

• might be possible to build from https://pypi.org/project/clang/
• or if possible move to python3-clang-14, as this is the oldest package available there now
• QT is not supported until v6.8 - i.e. QT5.15 LTS and 6.2 LTS requires 20.04, and 6.5 LTS is the first to support 22.04 https://doc.qt.io/qt-5/supported-platforms.html

[elecpower]

Version not supported for Qt 5.15

[pfeerick]

Thanks, but no need to worry about that yet I don't think... this is only a placeholder for when 22.04 is no longer an option (or we move onto a version QT that is supported) ;)