Update thiserror requirement from 1.0.59 to 2.0.0

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@1.0.59...2.0.0)

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

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

Cargo.toml

@@ -28,7 +28,7 @@ rustls-tls = ["reqwest/rustls-tls"]
 reqwest = { version = "0.12.5", default-features = false, features = ["json"] }
 serde = { version = "1.0.199", features = ["derive"] }
 ecow = { version = "0.2.2", features = ["serde"] }
-thiserror = { version = "1.0.59" }
+thiserror = { version = "2.0.0" }
 maybe-async = { version = "0.2.10" }
 governor = "0.6.3"
 rand = "0.8.5"