chore(deps): update thiserror requirement from 1.0.30 to 2.0.3 (#70)

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@1.0.30...1.0.69)

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

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Author: dependabot[bot]

Cargo.toml

@@ -10,7 +10,7 @@ categories = ["compression", "encoding", "parsing"]
 repository = "https://github.com/danieleades/arithmetic-coding"
 
 [workspace.dependencies]
-thiserror = "1.0.30"
+thiserror = "2.0.3"
 
 [workspace.lints.clippy]
 cargo = "deny"