Update thiserror requirement from 1 to 2 (returnString#299)

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...2.0.12)

---
updated-dependencies:
- dependency-name: thiserror
  dependency-version: 2.0.12
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

convergence/Cargo.toml

@@ -10,7 +10,7 @@ repository = "https://github.com/returnString/convergence"
 [dependencies]
 tokio = { version = "1", features = [ "net", "rt-multi-thread", "macros", "io-util", "io-std" ] }
 tokio-util = { version = "0.7", features = [ "codec" ] }
-thiserror = "1"
+thiserror = "2"
 bytes = "1"
 futures = "0.3"
 sqlparser = "0.55"