adding slides for Koney talk

Author: jetzlstorfer

_data/events.yml

@@ -657,6 +657,7 @@
       speaker: "Mario Kahlhofer"
       image: "https://media.licdn.com/dms/image/v2/C5603AQGT3eD-ton2VA/profile-displayphoto-shrink_800_800/profile-displayphoto-shrink_800_800/0/1584629003058?e=1759968000&v=beta&t=gtvpeaT0vuf3AU1rE3W7EnEU1VzbP9mZTM6ysakFdjQ"
       social: "https://www.linkedin.com/in/mario-kahlhofer/"
+      file: "/slides/2025-10/2025-10-07 CNDA 2025 - Catch Hackers with Koney.pdf"
 
 
 - id: 44