Bump certifi from 2023.7.22 to 2024.7.4 in /docs

Bumps [certifi](https://github.com/certifi/python-certifi) from 2023.7.22 to 2024.7.4.
- [Commits](certifi/python-certifi@2023.07.22...2024.07.04)

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

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

Author: dependabot[bot]

docs/requirements.txt

@@ -10,7 +10,7 @@ babel==2.12.1
     # via sphinx
 beautifulsoup4==4.12.2
     # via furo
-certifi==2023.7.22
+certifi==2024.7.4
     # via requests
 charset-normalizer==3.2.0
     # via requests