We run all combinations when validate the PR, let's just use one type for normal push
We run all combinations when validate the PR, let's just use one type for normal push

Motivation:

Let us just only use one build config when building the 4.1 branch.

Modifications:

As we already do a full validation when doing the PR builds we can just only use one build config for pushes to the "main" branches

Result:

Faster build times

tbrooks8/netty,NiteshKant/netty,johnou/netty,zer0se7en/netty,johnou/netty,doom369/netty,netty/netty,NiteshKant/netty,tbrooks8/netty,ejona86/netty,doom369/netty,netty/netty,tbrooks8/netty,zer0se7en/netty,netty/netty,Spikhalskiy/netty,tbrooks8/netty,Spikhalskiy/netty,doom369/netty,doom369/netty,Spikhalskiy/netty,ejona86/netty,tbrooks8/netty,johnou/netty,NiteshKant/netty,netty/netty,Spikhalskiy/netty,johnou/netty,zer0se7en/netty,NiteshKant/netty,ejona86/netty,Spikhalskiy/netty,ejona86/netty,netty/netty,johnou/netty,zer0se7en/netty,ejona86/netty,doom369/netty,zer0se7en/netty,NiteshKant/netty