Catch2 test version is out of date, blocking test execution on new none x86-platforms

[rfbird]

There was a "feature" in old catch in which it emitted some raw ASM into the executable. The previous ASM they generated is not compatible with some modern non x86-platforms but they have fixed that in a new version

It would be neat if you could update the catch version to something more modern :). Should be as simple as just updating the file