[Releasing] Maintainers, your action needed: Qt 5.11.3 changes files

[Jani Heikkinen]

Hi,

Initial ones here: https://codereview.qt-project.org/#/q/message:+%22Add+changes+file+for+Qt+5.11.3%22,n,z

Please do needed modifications and make sure reviews are done as soon as possible

br,
Jani