chore: update contributors

Author: daviddias

package.json

@@ -85,6 +85,7 @@
     "Arpit Agarwal <atvanguard@users.noreply.github.com>",
     "Bernard Mordan <bernard@tableflip.io>",
     "David Dias <daviddias.p@gmail.com>",
+    "Diogo Silva <fsdiogo@gmail.com>",
     "Francisco Baio Dias <xicombd@gmail.com>",
     "Friedel Ziegelmayer <dignifiedquire@gmail.com>",
     "Greenkeeper <support@greenkeeper.io>",