Update thiserror requirement from 1.0.63 to 2.0.3

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@1.0.63...2.0.3)

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

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

flash-lso/Cargo.toml

@@ -15,7 +15,7 @@ categories = ["data-structures", "encoding", "parser-implementations"]
 [dependencies]
 nom = "7.1.3"
 enumset = "1.1.5"
-thiserror = "1.0.63"
+thiserror = "2.0.3"
 serde = { version = "1.0.210", optional = true, features = ["derive", "rc"] }
 
 [dev-dependencies]