[neon/forks/sip6/Neon/release] /: Update upstream source from tag 'upstream/6.15.2'

[Dmitry Shachnev]

Git commit a1c195a306775c5ce2e635705cb607d6eda2cc53 by Dmitry Shachnev.
Committed on 09/03/2026 at 14:07.
Pushed by carlosdem into branch 'Neon/release'.

Update upstream source from tag 'upstream/6.15.2'

Update to upstream version '6.15.2'
with Debian dir bf9c31c10e32c5c119b078e47a27b47fd86220f0


https://invent.kde.org/neon/forks/sip6/-/commit/a1c195a306775c5ce2e635705cb607d6eda2cc53