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

@@ -51,7 +51,7 @@ futures = "0.3.17"
 gherkin = "0.14"
 globwalk = "0.8.1"
 humantime = "2.1"
-itertools = "0.11"
+itertools = "0.12"
 lazy-regex = "3.0"
 linked-hash-map = "0.5.3"
 once_cell = "1.13"

codegen/Cargo.toml

@@ -23,7 +23,7 @@ proc-macro = true
 [dependencies]
 cucumber-expressions = { version = "0.3", features = ["into-regex"] }
 inflections = "1.1"
-itertools = "0.11"
+itertools = "0.12"
 proc-macro2 = "1.0.28"
 quote = "1.0.9"
 regex = "1.5.5"