Add Jayden Seric to the 2020-06-30 agenda (#112)

Co-authored-by: Sam Parsons <sjparsons@gmail.com>

working-group/agendas/2020-06-30.md

@@ -21,10 +21,11 @@ This is an open meeting in which anyone in the GraphQL community may attend.
 > - Read and follow the [participation guidelines](https://github.com/graphql/graphql-wg#participation-guidelines) and [code of conduct](https://github.com/graphql/foundation/blob/master/CODE-OF-CONDUCT.md).
 
 | Name                     | Organization / Project         | Location
-| ------------------------ | ------------------------------ | ---------
+| ------------------------ | ------------------------------ | --------------------
 | Michael Staib            | ChilliCream                    | Zurich, Switzerland
 | Denis Badurina           | domonda, BHIDAPA               | Vienna, Austria
 | Benjie Gillam            | Graphile                       | Southampton, UK
+| Jayden Seric             | GraphQL multipart request spec | Melbourne, Australia
 | Morris Matsa             | IBM                            | Boston, USA
 | Benedikt Franke          | Lighthouse, graphql-php        | Traunstein, Germany
 | Gabriel McAdams          | PayPal                         | San Jose, CA, US
@@ -54,5 +55,6 @@ Example agenda item:
 1. Review agenda (2m)
 1. Clarify URL requirements https://github.com/APIs-guru/graphql-over-http/pull/94 (10m, Benedikt)
 1. Clarify status codes https://github.com/APIs-guru/graphql-over-http/pull/79 (20m, Benedikt)
+1. Jayden Seric to discuss automated test implementation progress in [`graphql-http-test`](https://github.com/jaydenseric/graphql-http-test) (15m).
 1. *ADD YOUR AGENDA ABOVE*