build(deps): update thiserror requirement from 1.0 to 2.0

Updates the requirements on [thiserror](https://github.com/dtolnay/thiserror) to permit the latest version.
- [Release notes](https://github.com/dtolnay/thiserror/releases)
- [Commits](dtolnay/thiserror@1.0.0...2.0.18)

---
updated-dependencies:
- dependency-name: thiserror
  dependency-version: 2.0.18
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Cargo.toml

@@ -10,7 +10,7 @@ repository = "https://github.com/cv/bash-ast"
 [dependencies]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-thiserror = "1.0"
+thiserror = "2.0"
 schemars = "0.8"
 
 [build-dependencies]