[Releasing] Branching from '5.12' to '5.12.10' done

[Jani Heikkinen]

Hi everyone,

We have branched '5.12.10' from '5.12'. So from now on all changes targeted to Qt 5.12.10 release must be cherry picked to '5.12.10' and '5.12' is for Qt 5.12.11.

Staging in '5.12.10' is restricted to release team only and we will automatically monitor changes coming in.

There won't  be any merges from '5.12.10' to '5.12' so please remember to cherry-pick your changes also in '5.12'.

br,
Jani Heikkinen
Release Manager