Bump rayon from 1.5.1 to 1.6.1 in /ruby

Bumps [rayon](https://github.com/rayon-rs/rayon) from 1.5.1 to 1.6.1.
- [Release notes](https://github.com/rayon-rs/rayon/releases)
- [Changelog](https://github.com/rayon-rs/rayon/blob/master/RELEASES.md)
- [Commits](rayon-rs/rayon@v1.5.1...rayon-core-v1.6.1)

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

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

Author: dependabot[bot]

ruby/Cargo.lock

@@ -15,7 +15,7 @@ tree-sitter-ruby = { git = "https://github.com/tree-sitter/tree-sitter-ruby.git"
 clap = "3.0"
 tracing = "0.1"
 tracing-subscriber = { version = "0.3.3", features = ["env-filter"] }
-rayon = "1.5.0"
+rayon = "1.6.1"
 num_cpus = "1.14.0"
 regex = "1.7.1"
 encoding = "0.2"