Update to Netty 4.1.46.Final, fix security alerts
Update to Netty 4.1.46.Final, fix security alerts

https://github.com/advisories/GHSA-mm9x-g8pc-w292
https://github.com/advisories/GHSA-cqqj-4p63-rrmm
https://github.com/advisories/GHSA-p2v9-g2qv-p635

satoshinm/WebSandboxMC