meetup: add decaffeth

Author: s1na

src/data/community-meetups.json

@@ -496,5 +496,11 @@
     "emoji": ":italy:",
     "location": "Naples",
     "link": "https://www.eventbrite.it/e/863744451907/"
-  }    
+  },
+  {
+    "title": "Decaffeth",
+    "emoji": ":iran:",
+    "location": "Tehran",
+    "link": "https://lu.ma/kkiyi2so"
+  }
 ]