Set timeout limits for CI jobs

As stated in https://github.com/RustPython/RustPython/pull/5914#issuecomment-3053034135

It would be good to have a timeout for the CI of 30 minutes if running on Linux/MacOS and a timeout of 40 minutes if running on windows