[upd] pypi: Bump certifi from 2025.1.31 to 2025.4.26

Bumps [certifi](https://github.com/certifi/python-certifi) from 2025.1.31 to 2025.4.26.
- [Commits](https://github.com/certifi/python-certifi/compare/2025.01.31...2025.04.26)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2025.4.26
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -1,4 +1,4 @@
-certifi==2025.1.31
+certifi==2025.4.26
 babel==2.17.0
 flask-babel==4.0.0
 flask==3.1.0