Update release notes

Author: labkey-alan

CHANGE.txt

@@ -2,11 +2,13 @@
 LabKey Python Client API News
 +++++++++++
 
-What's New in the LabKey 4.0.2 package
+What's New in the LabKey 4.1.0 package
 ==============================
 
 *Release date: 02/24/2026*
 - Add array filter types
+- Use importlib to determine client version
+- Update build to use Hatch
 
 What's New in the LabKey 4.0.1 package
 ==============================