Added Roman and 'backward compatibility' topic to meeting agenda (#1233)

Co-authored-by: Benjie <[email protected]>

Author: rivantsov

agendas/2023/01-Jan/19-wg-secondary-eu.md

@@ -102,6 +102,7 @@ who could not make the primary meeting time.
 | :--------------- | :-------- | :----------------- | :-------------------- |
 | Lee Byron (Host) | @leebyron | GraphQL Foundation | San Francisco, CA, US |
 | Michael Staib    | @michaelstaib | ChilliCream    | Zurich, CH            |
+| Roman Ivantsov   | @rivantsov| Individual         | Seattle, WA, US       |
 
 ## Agenda
 
@@ -119,3 +120,4 @@ who could not make the primary meeting time.
    - [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. Discussion of [Backward Compatibility](https://github.com/graphql/graphql-wg/discussions/1232) (20m, Roman)