Release to experimental.

debian/changelog

@@ -1,4 +1,4 @@
-qt6-base (6.6.1+dfsg-1) UNRELEASED; urgency=medium
+qt6-base (6.6.1+dfsg-1) experimental; urgency=medium
 
   [ Patrick Franz ]
   * Backport patch to fix accessibility support on Wayland.
@@ -9,7 +9,7 @@ qt6-base (6.6.1+dfsg-1) UNRELEASED; urgency=medium
   * Update list of installed files.
   * Update symbols from buildlogs.
 
- -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Mon, 04 Dec 2023 19:53:40 +0100
+ -- Patrick Franz <deltaone@debian.org>  Mon, 04 Dec 2023 21:52:53 +0100
 
 qt6-base (6.6.0+dfsg-6) experimental; urgency=medium