I am using a Raspberry Pi 4B running Ubuntu 22.04
For BOINC I am running 7.20.5 from the following source.

https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/boinc

Is it possible for me to run a newer version of BOINC. E.g. 7.24.1 or above as that is already available on windows and Mac.
Either from another ppa or other mean without compiling the code.

Not that I am aware of. It may be worth trawling through the various Debian based distributions to see if any have a more recent version but that could end up being more work than compiling it yourself.

Not going to look for it now as on mobile away from computer till Thursday but I have posted the dependencies I needed to compile on Ubuntu. Having the list made my last installation on a fresh install a relatively trivial undertaking.