Install Qt 5.14 or later in Linux Ubuntu 20.04

Hi community,
I need to use the QImage::Format_BGR888 image format in my code.
Unfortunately I have to work with Ubuntu 20.04 and the command

Code:

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sudo apt-get install qt5-default

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installs the version 5.12.x that does not support such image format that has been added with Qt 5.14.
Any suggestion please?
Thanx in advance!
Franco

You can always install using the installer binary https://www.qt.io/download-qt-installer (Qt account needed)