Update ROADMAP.md

Author: BoD

ROADMAP.md

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 # 🔮 Apollo Kotlin Roadmap
 
-**Last updated: 2025-05-09**
+**Last updated: 2025-06-02**
 
 For up to date release notes, refer to the project [Changelog](https://github.com/apollographql/apollo-kotlin/blob/main/CHANGELOG.md).