Update certifi requirement from ~=2025.1.31 to ~=2025.4.26

Updates the requirements on [certifi](https://github.com/certifi/python-certifi) to permit the latest version.
- [Commits](certifi/python-certifi@2025.01.31...2025.04.26)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 alabaster~=1.0.0
 Babel~=2.17.0
 beautifulsoup4~=4.13.4
-certifi~=2025.1.31
+certifi~=2025.4.26
 chardet~=5.2.0
 css-html-js-minify~=2.5.5
 docutils~=0.21.2