Add Matt to Jan 2023 Primary

Author: mjmahone

agendas/2023/01-Jan/05-wg-primary.md

@@ -99,6 +99,7 @@ hold additional secondary meetings later in the month.
 | Name             | GitHub        | Organization       | Location              |
 | :--------------- | :------------ | :----------------- | :-------------------- |
 | Lee Byron (Host) | @leebyron     | GraphQL Foundation | San Francisco, CA, US |
+| Matt Mahoney     | @mjmahone     | Meta               | New York, NY, US      |
 
 ## Agenda
 
@@ -117,3 +118,4 @@ hold additional secondary meetings later in the month.
    - [Ready for review](https://github.com/graphql/graphql-wg/issues?q=is%3Aissue+is%3Aopen+label%3A%22Ready+for+review+%F0%9F%99%8C%22+sort%3Aupdated-desc)
    - [All open action items (by last update)](https://github.com/graphql/graphql-wg/issues?q=is%3Aissue+is%3Aopen+label%3A%22Action+item+%3Aclapper%3A%22+sort%3Aupdated-desc)
    - [All open action items (by meeting)](https://github.com/graphql/graphql-wg/projects?query=is%3Aopen+sort%3Aname-asc)
+1. Updates on [Fragment Arguments](https://github.com/graphql/graphql-js/pull/3152) (15m, Matt)