[Issue 5387] Update Netty version for improving memory usage

[equanz]

Motivation

Want to improve memory usage to be able to create many PulsarClients and Consumers.
(Fix #5387)

Modifications

Update Netty version to 4.1.34.Final and netty-tcnative-boringssl-static version to 2.0.22.Final.

In Netty community, memory increase issue(netty/netty#8814) was reported (at 4.1.32.Final). It was fixed by netty/netty#8825 (at 4.1.34.Final).

When I apply 4.1.34.Final then memory usage was decreased correctly.

[aahmed-se]

https://mvnrepository.com/artifact/io.netty/netty-all/4.1.42.Final is the latest release why not just update to that.

[equanz]

@aahmed-se
Thank you for your review.
In netty/netty#8814 issue, problem occurred patch version update. So, update version chose just fixed one. Not for critical reason such as build failure.

As follow suggestion, I'll try to update to https://mvnrepository.com/artifact/io.netty/netty-all/4.1.42.Final.

[equanz]

Please take another look.

[merlimat]

@equanz Great catch on correlating #5387 with the netty memory usage issue.

The netty upgrade is already part of #3613 which is also breaking down netty-all into individual modules.

[sijie]

The netty version is already upgraded as part of #3613