Bump certifi (#512)

Bumps the pip group with 1 update in the / directory: [certifi](https://github.com/certifi/python-certifi).


Updates `certifi` from 2026.7.22 to 2026.10.18
- [Commits](certifi/python-certifi@2026.07.22...2026.10.18)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2026.10.18
  dependency-type: indirect
  dependency-group: pip
...

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Author: dependabot[bot]