Bump the minor group with 2 updates

Bumps the minor group with 2 updates: [serde_json](https://github.com/serde-rs/json) and [tokio](https://github.com/tokio-rs/tokio).


Updates `serde_json` from 1.0.120 to 1.0.121
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](serde-rs/json@v1.0.120...v1.0.121)

Updates `tokio` from 1.39.1 to 1.39.2
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.39.1...tokio-1.39.2)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: minor
- dependency-name: tokio
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: minor
...

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