Bump types-pyyaml from 6.0.12.20250915 to 6.0.12.20260408

Bumps [types-pyyaml](https://github.com/python/typeshed) from 6.0.12.20250915 to 6.0.12.20260408.
- [Commits](https://github.com/python/typeshed/commits)

---
updated-dependencies:
- dependency-name: types-pyyaml
  dependency-version: 6.0.12.20260408
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]