Bump io.netty:netty-handler-proxy from 4.2.3.Final to 4.2.4.Final (#460)

Bumps [io.netty:netty-handler-proxy](https://github.com/netty/netty) from 4.2.3.Final to 4.2.4.Final.
- [Commits](netty/netty@netty-4.2.3.Final...netty-4.2.4.Final)

---
updated-dependencies:
- dependency-name: io.netty:netty-handler-proxy
  dependency-version: 4.2.4.Final
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]