Bump ndarray from 1.0.18 to 1.0.19

Bumps [ndarray](https://github.com/mikolalysenko/ndarray) from 1.0.18 to 1.0.19.
- [Release notes](https://github.com/mikolalysenko/ndarray/releases)
- [Commits](https://github.com/mikolalysenko/ndarray/commits)

---
updated-dependencies:
- dependency-name: ndarray
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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