chore(cpn): upgrade to Ubuntu 22.04 and Qt 6.9.0 (#5986)

Co-authored-by: elecpower <elecpower@users.noreply.github.com>
Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>

companion/src/shared/curveimagewidget.cpp

@@ -81,7 +81,7 @@ void CurveImageWidget::draw()
 
     QImage image = curveImage->get();
     if (index < 0)
-      image = image.mirrored(true, false);
+      image = image.flipped(Qt::Horizontal);
     setPixmap(QPixmap::fromImage(image.scaled(height(), width())));
 
     delete curveImage;