Update gagnonlg.yml (#2400)

Author: ianna

_data/people/gagnonlg.yml

@@ -107,7 +107,7 @@ presentations:
     project: acts
     location: CERN
   - title: Performance Case Study on Charge Clusterization
-    date: 2024-11-24
+    date: 2024-07-24
     meeting: CoDAS-HEP 2024
     url: https://indico.cern.ch/event/1422680/contributions/6029252/
     meetingurl: https://indico.cern.ch/event/1422680/