Mark Tails 4.1.1 as released.

debian/changelog

-tails (4.1.1) UNRELEASED; urgency=medium
+tails (4.1.1) unstable; urgency=medium
 
   * Bugfixes
     - Drop all network drivers from the initramfs to shrink its size
@@ -11,7 +11,7 @@ tails (4.1.1) UNRELEASED; urgency=medium
     - Fix escape sequence in tails-gdm-failed-to-start.service, to avoid a
       warning message (Closes: #17166).
 
- -- Tails developers <tails@boum.org>  Sun, 15 Dec 2019 20:57:59 +0100
+ -- Tails developers <tails@boum.org>  Sun, 15 Dec 2019 23:51:25 +0100
 
 tails (4.1) unstable; urgency=medium