chore(deps): bump the minor-and-patch group in /backend with 5 updates (#999)

Bumps the minor-and-patch group in /backend with 5 updates:

| Package | From | To |
| --- | --- | --- |
| [tokio](https://github.com/tokio-rs/tokio) | `1.52.3` | `1.53.0` |
| [serde](https://github.com/serde-rs/serde) | `1.0.228` | `1.0.229` |
| [serde_json](https://github.com/serde-rs/json) | `1.0.150` | `1.0.151` |
| [futures-util](https://github.com/rust-lang/futures-rs) | `0.3.32` | `0.3.33` |
| [thiserror](https://github.com/dtolnay/thiserror) | `2.0.18` | `2.0.19` |


Updates `tokio` from 1.52.3 to 1.53.0
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.52.3...tokio-1.53.0)

Updates `serde` from 1.0.228 to 1.0.229
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.228...v1.0.229)

Updates `serde_json` from 1.0.150 to 1.0.151
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](serde-rs/json@v1.0.150...v1.0.151)

Updates `futures-util` from 0.3.32 to 0.3.33
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/main/CHANGELOG.md)
- [Commits](rust-lang/futures-rs@0.3.32...0.3.33)

Updates `thiserror` from 2.0.18 to 2.0.19
- [Release notes](https://github.com/dtolnay/thiserror/releases)
- [Commits](dtolnay/thiserror@2.0.18...2.0.19)

---
updated-dependencies:
- dependency-name: tokio
  dependency-version: 1.53.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor-and-patch
- dependency-name: serde
  dependency-version: 1.0.229
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: serde_json
  dependency-version: 1.0.151
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: futures-util
  dependency-version: 0.3.33
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
- dependency-name: thiserror
  dependency-version: 2.0.19
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: minor-and-patch
...

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Author: dependabot[bot]