build(deps): bump smartstring from 0.2.10 to 1.0.0 (helix-editor#1722)

Bumps [smartstring](https://github.com/bodil/smartstring) from 0.2.10 to 1.0.0.
- [Release notes](https://github.com/bodil/smartstring/releases)
- [Changelog](https://github.com/bodil/smartstring/blob/master/CHANGELOG.md)
- [Commits](bodil/smartstring@v0.2.10...v1.0.0)

---
updated-dependencies:
- dependency-name: smartstring
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

helix-core/Cargo.toml

@@ -17,7 +17,7 @@ helix-syntax = { version = "0.6", path = "../helix-syntax" }
 
 ropey = "1.3"
 smallvec = "1.8"
-smartstring = "0.2.10"
+smartstring = "1.0.0"
 unicode-segmentation = "1.9"
 unicode-width = "0.1"
 unicode-general-category = "0.5"