Do release 4.0.0.dev9

CHANGELOG.rst

@@ -16,6 +16,9 @@ If you're upgrading from 3.x, there is now a migration path to use.
 Therefore, please install ``AlekSIS-App-Lesrooster`` which now
 includes parts of the legacy Chronos and the migration path.
 
+`4.0.0.dev9`_ - 2024-12-07
+--------------------------
+
 Added
 ~~~~~
 
@@ -402,3 +405,4 @@ Fixed
 .. _4.0.0.dev2: https://edugit.org/AlekSIS/Official/AlekSIS-App-Alsijil/-/tags/4.0.0.dev2
 .. _4.0.0.dev3: https://edugit.org/AlekSIS/Official/AlekSIS-App-Alsijil/-/tags/4.0.0.dev3
 .. _4.0.0.dev8: https://edugit.org/AlekSIS/Official/AlekSIS-App-Alsijil/-/tags/4.0.0.dev8
+.. _4.0.0.dev9: https://edugit.org/AlekSIS/Official/AlekSIS-App-Alsijil/-/tags/4.0.0.dev9