Update thiserror requirement from 1.0.24 to 2.0.3 (#33)

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@1.0.24...2.0.3)

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

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

Cargo.toml

@@ -11,7 +11,7 @@ categories = ["os::unix-apis"]
 
 [dependencies]
 nix = { version = "0.29.0", features = ["fs"] }
-thiserror = "1.0.24"
+thiserror = "2.0.3"
 tokio-crate = { package = "tokio", version = "1.32.0", optional = true, default-features = false, features = [
   "process",
 ] }