Update 2020-07-02 agenda re: deprecated input fields (#441)

Co-authored-by: Stephen Spalding <sspalding@netflix.com>

agendas/2020-07-02.md

@@ -63,8 +63,10 @@ Example agenda item:
 1. Review agenda (2m, Lee)
 1. Review previous meeting's action items (5m, Lee)
    - [All action items](https://github.com/graphql/graphql-wg/issues?q=is%3Aissue+label%3A%22Action+item+%3Aclapper%3A%22)
-1. Next steps for moving the @deprecated directive on inputValues Proposal to Stage 2 (5m, Stephen)
-   - [Proposal (RFC 1)](https://github.com/graphql/graphql-spec/pull/525)
+1. Moving the `@deprecated directive on Input Fields` RFC to Stage 2 (15m, Stephen)
+   - [Initial spec PR (RFC 1)](https://github.com/graphql/graphql-spec/pull/525)
+   - [Updated spec PR (RFC 2 Candidate)](https://github.com/graphql/graphql-spec/pull/743/files)
+   - [GraphQL.js PR](https://github.com/graphql/graphql-js/pull/1560)
 1. @defer/@stream (15m, Rob/Liliana)
    - [Changing `isFinal` to `hasNext`](https://github.com/graphql/graphql-spec/pull/742/files#diff-5090b88632c0e12fdb832692da5c63edR71)
    - [First draft of spec edits](https://github.com/graphql/graphql-spec/pull/742)