Bump assert_cmd from 2.0.15 to 2.0.16

Bumps [assert_cmd](https://github.com/assert-rs/assert_cmd) from 2.0.15 to 2.0.16.
- [Changelog](https://github.com/assert-rs/assert_cmd/blob/master/CHANGELOG.md)
- [Commits](assert-rs/assert_cmd@v2.0.15...v2.0.16)

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

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