build(deps): bump certifi in /docs in the pip group

Bumps the pip group in /docs with 1 update: [certifi](https://github.com/certifi/python-certifi).


Updates `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
  dependency-group: pip
...

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