Bump certifi from 2023.7.22 to 2024.7.4 in /dev-requirements

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: direct:development
...

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

dev-requirements/dev.txt

@@ -3,7 +3,7 @@ attrs==21.2.0
 bleach==3.3.0
 build==0.3.1.post1
 cellmlmanip==0.3.6
-certifi==2023.7.22
+certifi==2024.7.4
 chardet==4.0.0
 colorama==0.4.4
 coverage==5.5