Release to unstable.

debian/changelog

@@ -1,10 +1,10 @@
-qt6-base (6.6.2+dfsg-8) UNRELEASED; urgency=medium
+qt6-base (6.6.2+dfsg-8) unstable; urgency=medium
 
   [ Patrick Franz ]
   * Remove the temporary Provides for the t64-suffix.
   * Handle upstream ABI break (Closes: #1071193, #1071436).
 
- -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Sat, 01 Jun 2024 02:12:55 +0200
+ -- Patrick Franz <deltaone@debian.org>  Thu, 06 Jun 2024 18:11:40 +0200
 
 qt6-base (6.6.2+dfsg-7) experimental; urgency=medium