Update runs due date to 1 June 2026

Author: cmihaigabriel

_editions/2026/tasks/memorability.md

@@ -128,7 +128,7 @@ accuracy. For Challenge 1.2 (EEG-based detection of recall), submissions will be
 
 * Registration for task participation opens: January 2026
 * Test data release: 1 March 2026
-* Runs due: 15 May 2026
+* Runs due: 1 June 2026
 * Working notes papers due: 10 June 2026
 * MediaEval 2026 Workshop, Mon.-Tue. 15-16 June 2026, Amsterdam, Netherlands and Online, co-located with ACM ICMR 2026
 * Camera ready deadline: 30 June 2026