Release to unstable.

debian/changelog

@@ -1,10 +1,10 @@
-qt6-base (6.4.2+dfsg-3) UNRELEASED; urgency=medium
+qt6-base (6.4.2+dfsg-3) unstable; urgency=medium
 
-  [ Lisandro Damián Nicanor Pérez Meyer ]
+  * Team upload.
   * Remove symbols related to libzstd. They where there because of the static
     library.
 
- -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Mon, 06 Feb 2023 16:30:20 -0300
+ -- Lisandro Damián Nicanor Pérez Meyer <lisandro@debian.org>  Mon, 06 Feb 2023 16:47:48 -0300
 
 qt6-base (6.4.2+dfsg-2) unstable; urgency=medium