fix: Add recent blog posts (#273)

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Fixes #<issue_number_goes_here> 🦕

Author: fjuma

COMMUNITY_ARTICLES.md

@@ -17,6 +17,10 @@ Here are some articles and videos from the community that you may find helpful.
 
 *   [Getting Started with Quarkus and A2A Java SDK 0.3.0](https://quarkus.io/blog/quarkus-a2a-java-0-3-0-alpha-release/): Learn about what's new in the 0.3.0 version of the A2A Java SDK. This article also appeared in the [Medium Google Cloud publication](https://medium.com/google-cloud/getting-started-with-quarkus-and-a2a-java-sdk-0-3-0-c4e70620a805).
 
+*   [A2A Java SDK: Support for the REST Transport is Now Here](https://medium.com/google-cloud/a2a-java-sdk-support-for-the-rest-transport-is-now-here-56c666060b32): Learn about the new support for the REST transport introduced in A2A Java SDK 0.3.0.Beta1.
+
+*   [Multi-Language Agent Collaboration and Interoperability with A2A](https://medium.com/google-cloud/multi-language-agent-collaboration-and-interoperability-with-a2a-e5fe80b4962d): A deep dive into a multi-language, multi-agent sample where agents written in Java, Python, and TypeScript work together to achieve a common goal: content creation.
+
 ## A2A Java SDK for Jakarta Servers
 
 *   [Building your First A2A Agent](https://www.wildfly.org/news/2025/08/07/Building-your-First-A2A-Agent/): An introduction on how to use the A2A Java SDK for Jakarta Servers with WildFly.