Add all releases from 2.12 branch to changelog

debian/changelog

@@ -4,6 +4,48 @@ icinga2 (2.13.0-1) icinga; urgency=medium
 
  -- Alexander Klimov <alexander.klimov@icinga.com>  Tue, 03 Aug 2021 09:44:31 +0200
 
+icinga2 (2.12.5-1) icinga; urgency=medium
+
+  * Release 2.12.5
+
+ -- Julian Brost <julian.brost@icinga.com>  Wed, 14 Jul 2021 14:11:39 +0200
+
+icinga2 (2.12.4-1) icinga; urgency=medium
+
+  * Release 2.12.4
+
+ -- Julian Brost <julian.brost@icinga.com>  Thu, 27 May 2021 11:00:47 +0200
+
+icinga2 (2.12.3-1) icinga; urgency=medium
+
+  * Release 2.12.3
+
+ -- Noah Hilverling <noah.hilverling@icinga.com>  Tue, 15 Dec 2020 12:22:13 +0100
+
+icinga2 (2.12.2-1) icinga; urgency=medium
+
+  * Release 2.12.2
+
+ -- Julian Brost <julian.brost@icinga.com>  Mon, 23 Nov 2020 14:19:09 +0100
+
+icinga2 (2.12.1-1) icinga; urgency=medium
+
+  * Release 2.12.1
+
+ -- Alexander A. Klimov <alexander.klimov@icinga.com>  Tue, 13 Oct 2020 18:32:18 +0200
+
+icinga2 (2.12.0-1) icinga; urgency=medium
+
+  * Release 2.12.0
+
+ -- Henrik Triem <henrik.triem@icinga.com>  Wed, 05 Aug 2020 10:18:18 +0200
+
+icinga2 (2.12.0~rc1-1) icinga; urgency=medium
+
+  * Release 2.12.0-rc1
+
+ -- Noah Hilverling <noah.hilverling@icinga.com>  Fri, 13 Mar 2020 14:39:31 +0100
+
 icinga2 (2.11.2-1) icinga; urgency=medium
 
   * Release 2.11.2