Added Michael Staib to Dec 2020 WG (#556)

Author: michaelstaib

agendas/2020-12-03.md

@@ -28,9 +28,10 @@ agenda, edit this file.*
 | Name                     | Organization / Project   | Location
 | ------------------------ | ------------------------ | ------------------------
 | Lee Byron                | GraphQL Foundation       | San Francisco, CA, US
-| Benjie Gillam ✏️          | Graphile                 | Southampton, UK
+| Benjie Gillam ✏️         | Graphile                 | Southampton, UK
 | Mark Larah               | Yelp                     | San Francisco, CA, US
 | Yogesh Desai             | Tokopedia                | Pune, India
+| Michael Staib            | ChilliCream              | Zurich, CH
 | *ADD YOUR NAME ABOVE TO ATTEND*