build(deps): bump jiff from 0.2.20 to 0.2.21

Bumps [jiff](https://github.com/BurntSushi/jiff) from 0.2.20 to 0.2.21.
- [Release notes](https://github.com/BurntSushi/jiff/releases)
- [Changelog](https://github.com/BurntSushi/jiff/blob/master/CHANGELOG.md)
- [Commits](BurntSushi/jiff@jiff-static-0.2.20...jiff-static-0.2.21)

---
updated-dependencies:
- dependency-name: jiff
  dependency-version: 0.2.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -31,7 +31,7 @@ env_logger = "0.11.9"
 fs_extra = "1.3.0"
 grass = { version = "0.13.4", default-features = false }
 indicatif = { version = "0.18.4", features = [ "rayon" ] }
-jiff = "0.2.20"
+jiff = "0.2.23"
 log = "0.4.29"
 nixdoc = "0.2.0"
 num_cpus = "1.17.0"