build: bump pyjson5 from 1.6.7 to 1.6.8

Bumps [pyjson5](https://github.com/Kijewski/pyjson5) from 1.6.7 to 1.6.8.
- [Release notes](https://github.com/Kijewski/pyjson5/releases)
- [Changelog](https://github.com/Kijewski/pyjson5/blob/main/CHANGELOG.md)
- [Commits](Kijewski/pyjson5@v1.6.7...v1.6.8)

---
updated-dependencies:
- dependency-name: pyjson5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -156,7 +156,7 @@ pygments==2.18.0
     #   mpire
     #   pydata-sphinx-theme
     #   sphinx
-pyjson5==1.6.7
+pyjson5==1.6.8
     # via doxysphinx
 pyjwt[crypto]==2.10.1
     # via pygithub