[neon/forks/pyqt5/Neon/release-lts] /: Update upstream source from tag 'upstream/5.15.3+dfsg'

[Dmitry Shachnev]

Git commit 1bd4b871b821aec6fe9b754e22cfe06f309e823c by Dmitry Shachnev.
Committed on 24/02/2021 at 18:29.
Pushed by jriddell into branch 'Neon/release-lts'.

Update upstream source from tag 'upstream/5.15.3+dfsg'

Update to upstream version '5.15.3+dfsg'
with Debian dir 3aa51995babdde683be11778e53a1e974704764f


https://invent.kde.org/neon/forks/pyqt5/commit/1bd4b871b821aec6fe9b754e22cfe06f309e823c