[neon-notifications] Dev Required: pyside2 - 5.15.12

[Neon CI]

https://build.neon.kde.org/job/watcher_release_qt_pyside2/136/display/redirect

#<Debian::UScan::DEHS::Package:0x000055e75704cdf8 @name="pyside2", @debian_uversion="5.15.11", @debian_mangled_uversion="5.15.11", @upstream_version="5.15.12", @upstream_url="https://download.qt.io/official_releases/QtForPython/pyside2/PySide2-5.15.12-src/pyside-setup-opensource-src-5.15.12.tar.xz", @status="Newer version available">