Bumps [netty-all](https://github.com/netty/netty) from 4.1.25.Final to 4.1.42.Final.
- [Release notes](https://github.com/netty/netty/releases)
- [Commits](https://github.com/netty/netty/compare/netty-4.1.25.Final...netty-4.1.42.Final

)
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