Mingw CI Runner Failing

I had a few minutes, so I thought I'd have a quick look at this as I keep getting notifications!

This works fine on my local system. However, when I compare it to the CI system, there is a version difference: I'm using GCC 13, while they have GCC 12 on the GitHub action runners.

I've not been able to get GCC 12 locally yet to see if it replicates the issue.