Add empty selection sets/etc to June agenda (#1987)

Author: benjie

agendas/2026/06-Jun/04-wg-primary.md

@@ -105,6 +105,7 @@ hold additional secondary meetings later in the month.
 | Name             | GitHub        | Organization       | Location              |
 | :--------------- | :------------ | :----------------- | :-------------------- |
 | Lee Byron (Host) | @leebyron     | GraphQL Foundation | San Francisco, CA, US |
+| Benjie Gillam    | @benjie       | Graphile           | Chandler's Ford, UK   |
 
 
 ## Agenda
@@ -123,3 +124,7 @@ hold additional secondary meetings later in the month.
 1. Check for [ready for review agenda items](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) (5m, Host)
 1. **Spec release**: release is coming, 2 months until freeze! (5m, Host)
 1. Reminder: [grants available for key initiatives](https://graphql.org/community/foundation/community-grant/) (1m, Host)
+1. [Allow empty selection
+   sets](https://github.com/graphql/graphql-spec/pull/1227) (5m, Benjie)
+1. [Allow empty object types](https://github.com/graphql/graphql-spec/pull/1228) (5m, Benjie)
+1. [Allow interfaces with no fields, unions with no members](https://github.com/graphql/graphql-spec/pull/1229) (10m, Benjie)