Bump langcodes from 3.3.0 to 3.4.0 (#347)

Bumps [langcodes](https://github.com/georgkrause/langcodes) from 3.3.0 to 3.4.0.
- [Release notes](https://github.com/georgkrause/langcodes/releases)
- [Commits](georgkrause/langcodes@v3.3.0...v3.4.0)

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

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