chore: update contributors

Author: daviddias

package.json

@@ -70,7 +70,9 @@
     "David Dias <mail@daviddias.me>",
     "Francisco Baio Dias <xicombd@gmail.com>",
     "Friedel Ziegelmayer <dignifiedquire@gmail.com>",
+    "Kobi Gurkan <kobigurk@gmail.com>",
     "Pau Ramon Revilla <masylum@gmail.com>",
-    "Richard Littauer <richard.littauer@gmail.com>"
+    "Richard Littauer <richard.littauer@gmail.com>",
+    "greenkeeperio-bot <support@greenkeeper.io>"
   ]
-}
+}