Update itertools requirement from 0.11.0 to 0.12.0 (#214)

* Update itertools requirement from 0.11.0 to 0.12.0

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]>

* Update changelog

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

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot[bot] <dependabot[bot]@users.noreply.github.com>
(cherry picked from commit e71bcbe)

CHANGELOG.md

@@ -7,6 +7,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### Dependencies
 - Bound `aws-*` dependencies to `<1.0` ([#215](https://github.com/opensearch-project/opensearch-rs/pull/215))
+- Bumps `itertools` from 0.11.0 to 0.12.0
 
 ### Changed
 

api_generator/Cargo.toml

@@ -15,7 +15,7 @@ dialoguer = "0.11.0"
 flate2 = "1"
 globset = "0.4"
 Inflector = "0.11.4"
-itertools = "0.11.0"
+itertools = "0.12.0"
 lazy_static = "1.4.0"
 log = "0.4.8"
 path-slash = "0.2.1"

yaml_test_runner/Cargo.toml

@@ -15,7 +15,7 @@ api_generator = { path = "./../api_generator" }
 anyhow = "1.0"
 base64 = "0.21"
 clap = "2"
-itertools = "0.11.0"
+itertools = "0.12.0"
 Inflector = "0.11.4"
 lazy_static = "1.4.0"
 log = "0.4.8"