Upgrading Qt

When Qt gets upgraded between major versions, we have to rebuild some packages due to ABI changes and private API usages. The following is a list of packages to bump on every major (e.g. 5.12.x to 5.14.x) upgrade:

py3-qt5
qt5-qtwebkit # is not part of the regular Qt releases
kio-extras
kdeclarative
kwayland
kwayland-integration
plasma-framework
breeze
plasma-integration
qqc2-desktop-style
kwin
kaidan # compiles it's QML files
ruqola # compiles it's QML files