Bump unicode-width from 0.1.7 to 0.1.8

Bumps [unicode-width](https://github.com/unicode-rs/unicode-width) from 0.1.7 to 0.1.8.
- [Release notes](https://github.com/unicode-rs/unicode-width/releases)
- [Commits](https://github.com/unicode-rs/unicode-width/commits/v0.1.8)

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

Author: dependabot-preview[bot]

Cargo.lock

@@ -48,7 +48,7 @@ version = "0.1"
 optional = true
 
 [dependencies.unicode-width]
-version = "0.1.5"
+version = "0.1.8"
 optional = true
 
 [dependencies.clap]