Bump certifi from 2023.11.17 to 2024.7.4 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 2023.11.17 to 2024.7.4
- [Commits](certifi/python-certifi@2023.11.17...2024.07.04)

---
updated-dependencies:
- dependency-name: certifi
  dependency-type: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -1,6 +1,6 @@
 alabaster==0.7.16
 Babel==2.14.0
-certifi==2023.11.17
+certifi==2024.7.4
 charset-normalizer==3.3.2
 commonmark==0.9.1
 docutils==0.20.1