Update windows-sys to 0.48

[taiki-e]

No description provided.

[Thomasdezeeuw]

Thanks @taiki-e

[TheBlueMatt]

Given this introduced a dependency on windows-targets, which has no MSRV guarantees between patch versions at all (or seems not to, per the maintainer's comment at tokio-rs/tokio#5934 (comment)) should this be reverted?

[Thomasdezeeuw]

It's really not great to have the same conversation in three issues/prs, but I've responded here: microsoft/windows-rs#2568 (comment).

[TheBlueMatt]

Given the comment on tokio the response from windows-sys/windows-targets seemed to be "not supported" and ultimately the issue wasn't in tokio but in mio (in the sense that it depends on something with no MSRV provided), so this felt like the right place :). Though, indeed, it did lead to a fragmented conversation which sucks. I've responded there so let's hash out there what windows-sys/windows-targets wants to support (or not) and then we can come back here and figure out how that impacts mio.