Bump mio from 0.8.2 to 0.8.3 (#1179)
Bump mio from 0.8.2 to 0.8.3 (#1179)

Bumps [mio](https://github.com/tokio-rs/mio) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/tokio-rs/mio/releases)
- [Changelog](https://github.com/tokio-rs/mio/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tokio-rs/mio/compare/v0.8.2...v0.8.3)

---
updated-dependencies:
- dependency-name: mio
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
alex/otp-cop