Update crossterm requirement from 0.27.0 to 0.28.1 (#3)

Updates the requirements on [crossterm](https://github.com/crossterm-rs/crossterm) to permit the latest version.
- [Release notes](https://github.com/crossterm-rs/crossterm/releases)
- [Changelog](https://github.com/crossterm-rs/crossterm/blob/master/CHANGELOG.md)
- [Commits](https://github.com/crossterm-rs/crossterm/commits)

---
updated-dependencies:
- dependency-name: crossterm
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tyler Bloom <[email protected]>

tombstone/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-crossterm = "0.27.0"
+crossterm = "0.28.1"
 ratatui = { version = "0.28.1", features = ["all-widgets"] }
 spirit = { path = "../spirit" }
 tracing = "0.1.40"