build: bump unicode-segmentation from 1.8.0 to 1.9.0 (starship#3573)

Bumps [unicode-segmentation](https://github.com/unicode-rs/unicode-segmentation) from 1.8.0 to 1.9.0.
- [Release notes](https://github.com/unicode-rs/unicode-segmentation/releases)
- [Commits](https://github.com/unicode-rs/unicode-segmentation/commits)

---
updated-dependencies:
- dependency-name: unicode-segmentation
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -64,7 +64,7 @@ sys-info = "0.9.1"
 terminal_size = "0.1.17"
 toml = { version = "0.5.8", features = ["preserve_order"] }
 toml_edit = "0.13.4"
-unicode-segmentation = "1.8.0"
+unicode-segmentation = "1.9.0"
 unicode-width = "0.1.9"
 urlencoding = "2.1.0"
 versions = "4.0.0"