Bump black from 26.3.1 to 26.5.1 (#208)

Bumps [black](https://github.com/psf/black) from 26.3.1 to 26.5.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@26.3.1...26.5.1)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 26.5.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Pipfile

@@ -13,7 +13,7 @@ python_version = "3.14"
 feedparser = "==6.0.12"
 
 [dev-packages]
-black = "==26.3.1"
+black = "==26.5.1"
 boto3 = "==1.43.7"
 flake8 = "==7.3.0"
 pip-audit = "==2.10.0"