chore(deps): bump ringbuf from 0.4.4 to 0.4.7

Bumps [ringbuf](https://github.com/agerasev/ringbuf) from 0.4.4 to 0.4.7.
- [Release notes](https://github.com/agerasev/ringbuf/releases)
- [Commits](https://github.com/agerasev/ringbuf/commits)

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

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

Author: dependabot[bot]