build(deps-dev): bump certifi from 2025.4.26 to 2025.6.15 (#324)

Bumps [certifi](https://github.com/certifi/python-certifi) from 2025.4.26 to 2025.6.15.
- [Commits](certifi/python-certifi@2025.04.26...2025.06.15)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2025.6.15
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

dev-requirements.txt

@@ -6,7 +6,7 @@
 #
 build==1.2.2.post1
     # via pip-tools
-certifi==2025.4.26
+certifi==2025.6.15
     # via requests
 charset-normalizer==3.4.2
     # via requests