build(deps): bump certifi from 2022.12.7 to 2023.7.22 in /docs (#367)

Bumps [certifi](https://github.com/certifi/python-certifi) from 2022.12.7 to 2023.7.22.
- [Commits](https://github.com/certifi/python-certifi/compare/2022.12.07...2023.07.22)

---
updated-dependencies:
- dependency-name: certifi
  dependency-type: indirect
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/requirements.txt

@@ -10,7 +10,7 @@ babel==2.12.1
     # via sphinx
 beautifulsoup4==4.12.2
     # via furo
-certifi==2022.12.7
+certifi==2023.7.22
     # via requests
 charset-normalizer==3.1.0
     # via requests