Bump certifi from 2025.11.12 to 2026.1.4 (notepad-plus-plus#1023)

Bumps [certifi](https://github.com/certifi/python-certifi) from 2025.11.12 to 2026.1.4.
- [Commits](certifi/python-certifi@2025.11.12...2026.01.04)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2026.1.4
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 attrs==25.4.0
-certifi==2025.11.12
+certifi==2026.1.4
 charset-normalizer==3.4.4
 idna==3.11
 jsonschema==4.25.1