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] <[email protected]>

Cargo.toml

@@ -24,7 +24,7 @@ include = [
 bitflags = "2.0"
 c-ares-sys = { version = "8.2.0", path = "c-ares-sys", default-features = false }
 c-types = "3.0.0"
-itertools = "0.11"
+itertools = "0.12"
 
 [target.'cfg(unix)'.dev-dependencies]
 nix = { version = "0.27", default-features = false, features = ["event"] }