Update "Last update" date

Should have been in previous commit

Author: dannyadair

bylaws/event_organisers/README.md

@@ -14,6 +14,6 @@ by three documents:
 
 | Document                                                       | Last Update | Status |
 | -------------------------------------------------------------- | ----------- | ------ |
-| [Python New Zealand and Event Organisers](event_organisers.md) | 11 Nov 2025 | Active |
+| [Python New Zealand and Event Organisers](event_organisers.md) | 15 Dec 2025 | Active |
 | [Event Organiser Commitment](commitment.md)                    | 11 Nov 2025 | Active |
 | [HOWTO Python New Zealand Events](howto_events.md)             | 15 Dec 2025 | Active |