Added changelog for version 23.12.1.

appdefs.yml

@@ -98,6 +98,18 @@ app:
             - `CONTAINER_NAME` is the name of the running container.
             - `USER_EMAIL` is the email of the address to reset the password.
   changelog:
+    - version: 23.12.1
+      date: 2023-12-15
+      changes:
+        - 'Fixed PowerDNS DNS provider plugin installation.'
+        - 'Fixed issue where HTTP2 support would always be enabled.'
+        - 'Fixed server reachability test.'
+        - 'Updated baseimage to version 3.5.2, which brings the following changes:'
+        - '2:Mirror for packages installation can be set via the `PACKAGES_MIRROR` environment variable.'
+        - '2:Improved the way the `take-ownership` script is working.'
+        - '2:Readiness and minimum running time checks should not be done for a service defined with an interval.'
+        - '2:Raise an error when a synched service fails to start.'
+        - '2:Minimum running time check of a service was using an incorrect way to verify if process is still alive.'
     - version: 23.08.1
       date: 2023-08-04
       changes: