rm old and add new meetings

Author: samumantha

content/join/meetings.md

@@ -18,8 +18,11 @@ involved but don't know where to start.
 The next large CodeRefinery workshop is coming up in September, so we dedicate our meetings to the preparation and planning of it.
 If you have any questions or suggestions about the workshop or want to teach with us, please join for any of the upcoming sessions: 
 
-- 2024-11-11 Governance 2025 and beyond
-- 2024-11-18 Manuals and train-the-trainer materials
+- 2024-11-18 Cancelled
+- 2024-11-25 Event reports and open discussion
+- 2024-12-02 Manuals and train-the-trainer materials
+- 2024-12-09 TBD
+- 2024-12-16 CodeRefinery ambassador call
 - ...