Bump rayon from 1.8.0 to 1.8.1 (#382)

Bumps [rayon](https://github.com/rayon-rs/rayon) from 1.8.0 to 1.8.1.
- [Changelog](https://github.com/rayon-rs/rayon/blob/master/RELEASES.md)
- [Commits](rayon-rs/rayon@rayon-core-v1.8.0...rayon-core-v1.8.1)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -15,7 +15,7 @@ categories = ["command-line-utilities"]
 bitcoin = "0.29.2"
 clap = "4.5.0"
 time = "0.3.30"
-rayon = "1.8.0"
+rayon = "1.8.1"
 getrandom = "0.2.12"
 serde = "1.0.185"
 serde_json = "1.0.109"