Update changelog from 2.12.1

CHANGELOG.rst

@@ -28,6 +28,14 @@ Removed
   * It caused major performance issues and is not useful with the new
     frontend anymore
 
+`2.12.1`_ - 2022-11-06
+----------------------
+
+Fixed
+~~~~~
+
+* An invalid backport caused OIDC clients without PKCD to fail.
+
 `2.12`_ - 2022-11-04
 --------------------
 
@@ -970,3 +978,4 @@ Fixed
 .. _2.11: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.11
 .. _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