Qt 6.5.3 has been released

- Qt 6.5.3 has been released:
https://www.qt.io/blog/qt-6.5.3-released

- Qt 6.6.0 RC has been released. It can be installed with the online installer.

- Qt 6.2.6 Opensource has been released:
https://code.qt.io/cgit/qt/qtreleasenotes.git/about/qt/6.2.6/release-note.md

- Qt Creator 11.0.3 has been released:
https://www.qt.io/blog/qt-creator-11.0.3-released