Bump rayon-core from 1.7.1 to 1.9.0

Bumps [rayon-core](https://github.com/rayon-rs/rayon) from 1.7.1 to 1.9.0.
- [Release notes](https://github.com/rayon-rs/rayon/releases)
- [Changelog](https://github.com/rayon-rs/rayon/blob/master/RELEASES.md)
- [Commits](https://github.com/rayon-rs/rayon/compare/rayon-core-v1.7.1...rayon-core-v1.9.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

servo-tidy.toml

@@ -34,12 +34,17 @@ packages = [
   "cfg-if",
   "cloudabi",
   "cocoa",
+  "crossbeam-channel",
+  "crossbeam-deque",
+  "crossbeam-epoch",
+  "crossbeam-utils",
   "env_logger",
   "fixedbitset",
   "gleam",
   "humantime",
   "libloading",
   "lock_api",
+  "memoffset",
   "metal",
   "miniz_oxide",
   "num-rational",