build(deps): update rowan requirement from 0.15 to 0.16

Updates the requirements on [rowan](https://github.com/rust-analyzer/rowan) to permit the latest version.
- [Commits](rust-analyzer/rowan@v0.15.0...v0.16.0)

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

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

Cargo.toml

@@ -31,7 +31,7 @@ indexmap = { version = "2.1", optional = true }
 jetscii = "0.5"
 memchr = "2.5"
 nom = { version = "7.1", default-features = false, features = ["std"] }
-rowan = "0.15"
+rowan = "0.16"
 tracing = { version = "0.1", optional = true }
 
 [dev-dependencies]