requirements(deps): bump packaging from 21.0 to 21.2

Bumps [packaging](https://github.com/pypa/packaging) from 21.0 to 21.2.
- [Release notes](https://github.com/pypa/packaging/releases)
- [Changelog](https://github.com/pypa/packaging/blob/main/CHANGELOG.rst)
- [Commits](pypa/packaging@21.0...21.2)

---
updated-dependencies:
- dependency-name: packaging
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -27,7 +27,7 @@ Faker==9.8.2
 ipython-genutils==0.2.0
 jedi==0.18.1
 matplotlib-inline==0.1.3
-packaging==21.0
+packaging==21.2
 parso==0.8.2
 pexpect==4.8.0
 pickleshare==0.7.5