Merge version 21.08.3-1+rpi1 and 21.12.0-1 to produce 21.12.0-1+rpi1

diff --cc debian/changelog
index 12ea200c8a90ad66b7102c71aafedabbc494b359,372dd89f27fc5c56af846c87274b6a3a85d1b7c2..7648e2355918893376d8bffc2d064a9e69c4db81
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,9 -1,9 +1,16 @@@
- kdenlive (21.08.3-1+rpi1) bookworm-staging; urgency=medium
++kdenlive (21.12.0-1+rpi1) bookworm-staging; urgency=medium
 +
 +  [changes brought forward from 21.08.1-1+rpi1 by root <Peter Michael Green <plugwash@raspbian.org> at Sun, 12 Sep 2021 21:45:33 +0000]
 +  * Remove armhf from architecture list of qtwebengine build-dependency.
 +
-  -- Raspbian forward porter <root@raspbian.org>  Mon, 06 Dec 2021 10:30:10 +0000
++ -- Raspbian forward porter <root@raspbian.org>  Tue, 21 Dec 2021 23:28:38 +0000
++
+ kdenlive (21.12.0-1) unstable; urgency=medium
+ 
+   * New upstream release.
+   * Update upstream signing key.
+ 
+  -- Patrick Matthäi <pmatthaei@debian.org>  Tue, 14 Dec 2021 17:24:49 +0100
  
  kdenlive (21.08.3-1) unstable; urgency=medium