Release to experimental.

debian/changelog

@@ -1,4 +1,4 @@
-qt6-base (6.3.0+dfsg-1) UNRELEASED; urgency=medium
+qt6-base (6.3.0+dfsg-1) experimental; urgency=medium
 
   [ Patrick Franz ]
   * New upstream release (6.3.0).
@@ -10,7 +10,7 @@ qt6-base (6.3.0+dfsg-1) UNRELEASED; urgency=medium
   * Update d/copyright.
   * Update lintian-overrides.
 
- -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Sun, 01 May 2022 01:08:36 +0200
+ -- Patrick Franz <deltaone@debian.org>  Mon, 23 May 2022 20:12:56 +0200
 
 qt6-base (6.2.4+dfsg-8) unstable; urgency=medium