We need to make sure all security critical 3rd party modules (https://wiki.qt.io/Third_Party_Code_in_Qt) are the latest one before we can release.
It seems that harfbuzz needs an update; we are using 10.4.0 but 11.0.0 is already available:
https://github.com/harfbuzz/harfbuzz/releases