Bump the cargo group across 1 directory with 2 updates

Bumps the cargo group with 2 updates in the / directory: [diesel](https://github.com/diesel-rs/diesel) and [serde_with](https://github.com/jonasbb/serde_with).


Updates `diesel` from 2.3.9 to 2.3.10
- [Release notes](https://github.com/diesel-rs/diesel/releases)
- [Changelog](https://github.com/diesel-rs/diesel/blob/main/CHANGELOG.md)
- [Commits](diesel-rs/diesel@v2.3.9...v2.3.10)

Updates `serde_with` from 3.20.0 to 3.21.0
- [Release notes](https://github.com/jonasbb/serde_with/releases)
- [Commits](jonasbb/serde_with@v3.20.0...v3.21.0)

---
updated-dependencies:
- dependency-name: diesel
  dependency-version: 2.3.10
  dependency-type: direct:production
  dependency-group: cargo
- dependency-name: serde_with
  dependency-version: 3.21.0
  dependency-type: direct:production
  dependency-group: cargo
...

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Author: dependabot[bot]