qt5: Update version from 5.12.4 to 5.12.7

1.  https://www.qt.io/blog/qt-5.12.5-released
2.  https://www.qt.io/blog/qt-5.12.6-released
3.  https://www.qt.io/blog/qt-5.12.7-released

Qt 5.12.6 fixes a Qt WebEngine build issue with PulseAudio 13.0.

[1]: https://bugreports.qt.io/browse/QTBUG-77037
[2]: https://bugs.gentoo.org/694960
[3]: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/707

qt5.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION qt5-5.12.5-0
+# BEE_VERSION qt5-5.12.7-0
 
 SRCURL[0]="https://download.qt.io/archive/qt/${PKGVERSION[2]}/${PKGVERSION}/single/qt-everywhere-src-${PKGVERSION}.tar.xz"