RUSTSEC-2024-0384: instant is unmaintained

[github-actions]

instant is unmaintained

Details
Status	unmaintained
Package	instant
Version	0.1.13
URL
Date	2024-09-01

This crate is no longer maintained, and the author recommends using the maintained web-time crate instead.

See advisory page for additional details.

[alexcrichton]

This is a transitive dependency of the egg crate used by wasm-mutate which is exclusively used during fuzzing. Fixing this will require updating egg in the wasm-tools repository, so this is likely not going to be super actionable for awhile but also isn't too too worrisome.