Merge #6620

6620: cargo update (without cargo_metadata) r=kjeremy a=kjeremy

This is a `cargo update` run without updating `cargo_metadata`.

`cargo_metadata` `0.12.1` pins `semver-parser` to `0.10.0` (https://github.com/oli-obk/cargo_metadata/commit/4e88e5624c5f20ca94dad0ea97fdb438fdea443f) which brings back the compile time blowup that @matklad tried so hard to avoid in https://github.com/steveklabnik/semver-parser/pull/50.

Co-authored-by: kjeremy <kjeremy@gmail.com>