Release to experimental.

debian/changelog

@@ -1,4 +1,4 @@
-qt6-base (6.3.1+dfsg-4) UNRELEASED; urgency=medium
+qt6-base (6.3.1+dfsg-4) experimental; urgency=medium
 
   [ Pino Toscano ]
   * Drop -march=native from the CXXFLAGS, as it will optimize the build for the
@@ -10,7 +10,7 @@ qt6-base (6.3.1+dfsg-4) UNRELEASED; urgency=medium
   * Add patch to not use yield on CPUs that do not support it (thx to
     Adrian Bunk).
 
- -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Sat, 16 Jul 2022 13:12:46 +0200
+ -- Patrick Franz <deltaone@debian.org>  Sat, 16 Jul 2022 20:37:59 +0200
 
 qt6-base (6.3.1+dfsg-3) experimental; urgency=medium