chore(deps): bump redis from 1.0.2 to 1.0.3 in /reference-apps/rust

Bumps [redis](https://github.com/redis-rs/redis-rs) from 1.0.2 to 1.0.3.
- [Release notes](https://github.com/redis-rs/redis-rs/releases)
- [Commits](https://github.com/redis-rs/redis-rs/commits)

---
updated-dependencies:
- dependency-name: redis
  dependency-version: 1.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]