chore(deps): bump tokio from 1.24.1 to 1.24.2 in /examples/rust/backe…

…nd (#3672)

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.24.1 to 1.24.2.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/commits)

---
updated-dependencies:
- dependency-name: tokio
  dependency-type: direct:production
...

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