Update to new netty-build version to be able to correctly detect copyright header in property files. (#8967)
Update to new netty-build version to be able to correctly detect copyright header in property files. (#8967)

Motivation:

https://github.com/netty/netty/pull/8963 adds property files which contains a netty copyright header but our old checkstyle regex did not correct detect these.

Modifications:

Update to new netty-build which contains an updated regex.

Result:

Be able to correctly detect copyright headers in property files.
gerdriesselmann/netty,gerdriesselmann/netty,gerdriesselmann/netty,gerdriesselmann/netty,gerdriesselmann/netty