chore(deps): update itertools requirement from 0.12 to 0.13

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@v0.12.0...v0.13.0)

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

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

crates/core/Cargo.toml

@@ -77,7 +77,7 @@ either = "1.8"
 fix-hidden-lifetime-bug = "0.2"
 hyper = { version = "0.14", optional = true }
 indexmap = "2.2.1"
-itertools = "0.12"
+itertools = "0.13"
 lazy_static = "1"
 libc = ">=0.2.90, <1"
 num-bigint = "0.4"