Add dortmund hackergarten event of february 2025

Author: timothee-clolus

events.json

@@ -11,6 +11,18 @@
         ],
         "achievements": []
     },
+    {
+        "date": "2025-13-02",
+        "venue": "Karakun @ Digitale Werkbank Dortmund",
+        "address": "Kanalstr. 25, 44147 Dortmund",
+        "links": [
+            {
+                "title": "Meetup",
+                "url": "https://www.meetup.com/hackergarten-dortmund/events/305627465/"
+            }
+        ],
+        "achievements": []
+    },
     {
         "date": "2025-11-04",
         "venue": "codecentric AG",