updated deadline aisec

Author: maurapintor

_data/conferences.yml

@@ -646,7 +646,7 @@
   description: Workshop on Artificial Intelligence and Security
   year: 2024
   link: https://aisec.cc
-  deadline: ["2024-06-21 23:59"]
+  deadline: ["2024-07-07 23:59"]
   date: October 14-18, 2024
   comment: Co-located with ACM CCS 2024
   place: Salt Lake City, UT, USA