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...2.0.0)

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

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

Cargo.toml

@@ -26,7 +26,7 @@ derive = ["clingo-derive"]
 vec1 = "1.8.0"
 clingo-sys =  "=0.7.2"
 clingo-derive = { version = "=0.2.0", optional = true }
-thiserror = "1.0"
+thiserror = "2.0"
 bitflags = "2"
 
 [dev-dependencies]