Bump assert_cmd from 2.0.15 to 2.0.16 in the dev-dependencies group

Bumps the dev-dependencies group with 1 update: [assert_cmd](https://github.com/assert-rs/assert_cmd).


Updates `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
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>