Bump assert_cmd from 2.0.5 to 2.0.8

Bumps [assert_cmd](https://github.com/assert-rs/assert_cmd) from 2.0.5 to 2.0.8.
- [Release notes](https://github.com/assert-rs/assert_cmd/releases)
- [Changelog](https://github.com/assert-rs/assert_cmd/blob/master/CHANGELOG.md)
- [Commits](https://github.com/assert-rs/assert_cmd/compare/v2.0.5...v2.0.8)

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

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -82,7 +82,7 @@ optional = true
 features = ["wrap_help", "cargo"]
 
 [dev-dependencies]
-assert_cmd = "2.0.5"
+assert_cmd = "2.0.8"
 expect-test = "1.4.0"
 serial_test = "0.6.0"
 predicates = "2.1.5"