Bump unicode-normalization from 0.1.16 to 0.1.19

Bumps [unicode-normalization](https://github.com/unicode-rs/unicode-normalization) from 0.1.16 to 0.1.19.
- [Release notes](https://github.com/unicode-rs/unicode-normalization/releases)
- [Commits](https://github.com/unicode-rs/unicode-normalization/commits)

---
updated-dependencies:
- dependency-name: unicode-normalization
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]