Merge 0.4.x msrv ci issue

[esheppa]

My intention here is to bring across the CI fix, but having looked into more detail at 1f1e2f8 I think that there may be some possibility to bring some or all of that work into 0.5 which is using windows-sys instead, so perhaps its better for this not to be merged for now. Question is, should that work be done in the merge here, or in a seperate PR directly to main?

[djc]

I think it makes sense to merge this work here. But mostly, for the MSRV issues, I'd like your feedback on #995.

There have been some developments on the windows side where I think we might want to use windows-bindgen instead of windows-sys going forward.

[kennykerr]

I don't recommend using windows-bindgen directly. I think your best bet is to stick with windows-sys.

https://kennykerr.ca/rust-getting-started/standalone-code-generation.html

[pitdicker]

Now that the MSRV is raised to 1.56 in #1053 we would no longer need a workaround.

[esheppa]

That is a good point @pitdicker - and as the MSRV now exceeds 1.48 everywhere, we can use the same impl for offset/local/windows.rs in both 0.4.x and main.

[pitdicker]

I opened #1190 for the suggestion to switch to windows-sys like on main.