Update client release notes

Author: hoijnet

RELEASE_NOTES.md

@@ -2,12 +2,14 @@
 
 ## v11.1.0
 
-- Add support for python 3.12
+- Add support for python 3.12 and deprecate python 3.8 (end of life)
 - Aligned with TerminusDB 11.1 overall and general preparation for v11.2.0
 
-### Bug fixes
+### Bug fixes and maintenance
 
 - Fix schema parameter to database construction
+- Update minimum Python version to 3.9 for urllib3 2.5.0 compatibility
+- Include latest security updates
 
 ## v10.2.6