chore(deps): Bump certifi from 2025.4.26 to 2025.6.15

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

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

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

requirements.txt

@@ -3,7 +3,7 @@ aiohttp==3.12.12
 aiosignal==1.3.2
 async-timeout==5.0.1
 attrs==25.3.0
-certifi==2025.4.26
+certifi==2025.6.15
 charset-normalizer==3.4.2
 click==8.1.8
 frozenlist==1.7.0