Update rayon-core requirement from =1.10.0 to =1.12.0

Updates the requirements on [rayon-core](https://github.com/rayon-rs/rayon) to permit the latest version.
- [Changelog](https://github.com/rayon-rs/rayon/blob/master/RELEASES.md)
- [Commits](rayon-rs/rayon@rayon-core-v1.10.0...rayon-core-v1.12.0)

---
updated-dependencies:
- dependency-name: rayon-core
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -19,7 +19,7 @@ byteorder = "=1.4.0"
 cc = "=1.0.78"
 jobserver = "=0.1.25"
 log = "=0.4.17"
-rayon-core = "=1.10.0"
+rayon-core = "=1.12.0"
 regex = "=1.7.1"
 regex-syntax = "=0.6.28"
 thread_local = "=1.1.4"