There seems to be a number of things needing changes to work with Qt 5.14, from a preliminary review this includes:
[ ] Update Docker image to Qt 5.14
[ ] deployment-file.json.in: add architectures: instead of target-architecture: key
[ ] androiddeployqt assumes binary files have an architecture suffix now
[ ] deployment-file.json.in: STL parameter changed format
[ ] deployment-file.json.in: toolchain prefix is hardcoded to llvm in 5.14, and androiddeployqt assumes that now; toolchain-version field is no longer used
[ ] AndroidManifest.xml template changes: need to be deployed to all apps...
[ ] with the above hacked in locally Kirigami applications fail to load QML files at startup,Kirigami applications fail to load QML files at startup, due to changes in how QML assets are bundled now
[ ] Kirigami icon loading needs to be adjusted to either use android_rcc_bundle.rcc or assets:/
[x] KNotifications aar generation needs porting
[ ] ki18n catalog loading relies on assets being available in the local file system, that's no longer the case; possibly due to changes in how QML assets are bundled nowdirect use of assets: or qrc: URLs wont work with libintl.