Bump rich from 13.4.2 to 13.6.0

Bumps [rich](https://github.com/Textualize/rich) from 13.4.2 to 13.6.0.
- [Release notes](https://github.com/Textualize/rich/releases)
- [Changelog](https://github.com/Textualize/rich/blob/master/CHANGELOG.md)
- [Commits](Textualize/rich@v13.4.2...v13.6.0)

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

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

requirements.txt

@@ -1,4 +1,4 @@
 cmd2==2.4.3
 humanfriendly==10.0
 python_magic==0.4.27
-rich==13.4.2
+rich==13.6.0