Update events.yml

Author: LaurenThomas0312

_data/events.yml

@@ -4,7 +4,7 @@
     - name: OWASP Global AppSec EU 2026 - Vienna, Austria
       start-date: 2026-06-22
       dates: June 22-26, 2026
-      #url:
+      url: https://owasp.glueup.com/event/owasp-global-appsec-eu-2026-vienna-austria-162243/
       #optional-text:  
     - name: OWASP Global AppSec USA 2026 - San Francisco, CA
       start-date: 2026-11-02