Update 2020-12-03.md (graphql#562)

Author: schrockn

agendas/2020-12-03.md

@@ -39,6 +39,7 @@ agenda, edit this file.*
 | Ivan Goncharov           | graphql-js               | Lviv, UA
 | Alan Cha                 | IBM Research             | Yorktown Heights, NY, US
 | Sasha Solomon            | Twitter                  | Portland, OR, US
+| Nick Schrock             | Elementl                 | Tahoe City, CA, US
 
 
 ## Agenda