Bump Rust edition to 2024

[szokeasaurusrex]

If you don't want to bump to 1.88, I believe it's also possible to address this by bumping to 1.85 and switching to edition = "2024" and therefore resolver = "3".
That way, cargo update should only pick versions of the deps that are compatible with that MSRV.

Originally posted by @lcian in #970 (comment)

[linear]

RUST-137