Update to Unreal Engine 4.24 (or latest)

[jaydenmilne]

Describe the new feature you'd like
We are on 4.22, it would be good to update to 4.24 if possible, so we don't get too far behind upstream. There are some enhancements to weather that might be good

https://docs.unrealengine.com/en-US/Support/Builds/ReleaseNotes/4_23/index.html
https://docs.unrealengine.com/en-US/Support/Builds/ReleaseNotes/4_24/index.html

[daniekpo]

It doesn't look like there's any breaking change that will affect us. We can bump it up to 4.25.