build(deps): bump msgpack from 1.0.0 to 1.2.1

Bumps [msgpack](https://github.com/msgpack/msgpack-python) from 1.0.0 to 1.2.1.
- [Release notes](https://github.com/msgpack/msgpack-python/releases)
- [Changelog](https://github.com/msgpack/msgpack-python/blob/main/CHANGELOG.md)
- [Commits](msgpack/msgpack-python@v1.0.0...v1.2.1)

---
updated-dependencies:
- dependency-name: msgpack
  dependency-version: 1.2.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -40,7 +40,7 @@ Jinja2==3.1.4
 jmespath==0.10.0
 Markdown==3.3.3
 MarkupSafe==2.1.5
-msgpack==1.0.0
+msgpack==1.2.1
 ndg-httpsclient==0.5.1
 oauth2client==4.1.3
 oauthlib==3.1.0