Add changelog for 2.12.2 - 2.12.3

CHANGELOG.rst

@@ -78,6 +78,27 @@ Removed
   * It caused major performance issues and is not useful with the new
     frontend anymore
 
+`2.12.3` - 2023-03-07
+---------------------
+
+Fixed
+~~~~~
+
+* The permission check for the dashboard edit page failed when the user had no person assigned.
+* OIDC scope "phone" had no claims.
+* AlekSIS groups were not synced to Django groups on registration of existing persons
+* Invitations for existing short name did not work.
+* Invitations for persons without pre-defined e-mail address did not behave correctly
+
+`2.12.2`_ - 2022-12-18
+----------------------
+
+Fixed
+~~~~~
+
+* Incorporate SPDX license list for app licenses on About page because
+  spdx-license-list dependency vanished.
+
 `2.12.1`_ - 2022-11-06
 ----------------------
 
@@ -1030,3 +1051,5 @@ Fixed
 .. _2.11.1: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.11.1
 .. _2.12: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.12
 .. _2.12.1: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.12.1
+.. _2.12.2: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.12.2
+.. _2.12.3: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.12.3