⬆️ Update itertools requirement from 0.11 to 0.12

Updates the requirements on [itertools](https://github.com/rust-itertools/itertools) to permit the latest version.
- [Changelog](https://github.com/rust-itertools/itertools/blob/master/CHANGELOG.md)
- [Commits](rust-itertools/itertools@v0.11.0...v0.12.0)

---
updated-dependencies:
- dependency-name: itertools
  dependency-type: direct:production
...

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

rust/ltp/Cargo.toml

@@ -34,7 +34,7 @@ required-features = ["serialization", "parallel"]
 [dependencies]
 anyhow = "1"
 num-traits = "0.2"
-itertools = "0.11"
+itertools = "0.12"
 
 cedarwood = "0.4"