Document changes and release 0.7.1-1pureos0~amber0

debian/changelog

+phosh (0.7.1-1pureos0~amber0) amber-phone; urgency=medium
+
+  * Backport to amber-phone
+  * Run ci against bullseye
+  * Use debhelper 12
+  * Add breaks on g-c-c without old keygrabbing API
+
+ -- Guido Günther <agx@sigxcpu.org>  Sat, 19 Dec 2020 13:05:07 +0100
+
 phosh (0.7.1-1pureos0) unstable; urgency=medium
 
   * debian: Add librem5-ci