chore(deps)(deps): bump the rust-all group across 1 directory with 4 updates

Bumps the rust-all group with 4 updates in the /vault-broker directory: [tokio](https://github.com/tokio-rs/tokio), [serde](https://github.com/serde-rs/serde), [serde_json](https://github.com/serde-rs/json) and [thiserror](https://github.com/dtolnay/thiserror).


Updates `tokio` from 1.52.4 to 1.53.1
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.52.4...tokio-1.53.1)

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 `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: serde
  dependency-version: 1.0.229
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: rust-all
- dependency-name: serde_json
  dependency-version: 1.0.151
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: rust-all
- dependency-name: thiserror
  dependency-version: 2.0.19
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: rust-all
- dependency-name: tokio
  dependency-version: 1.53.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: rust-all
...

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Author: dependabot[bot]