Update thiserror requirement from 1.0.30 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@1.0.30...2.0.0)

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

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

Author: d-e-s-o

Cargo.toml

@@ -42,7 +42,7 @@ serde = {version = "1.0.103", features = ["derive"]}
 serde_json = {version = "1.0", default-features = false, features = ["std"]}
 serde_urlencoded = {version = "0.7", default-features = false}
 serde_variant = {version = "0.1", default-features = false}
-thiserror = "1.0.30"
+thiserror = "2.0"
 tokio = {version = "1.13", default-features = false, features = ["net"]}
 tracing = {version = "0.1", default-features = false, features = ["attributes", "std"]}
 tracing-futures = {version = "0.2", default-features = false, features = ["std-future"]}