Add 4th meetup announcement to readme (vllm-project#4817)

Author: simon-mo

README.md

@@ -15,6 +15,7 @@ Easy, fast, and cheap LLM serving for everyone
 </p>
 
 *Latest News* 🔥
+- [2024/05] We are hosting [the fourth vLLM meetup](https://lu.ma/event/manage/evt-A064fGpj52fviSn) with BentoML and Cloudflare on June 11! Please register [here](https://lu.ma/agivllm).
 - [2024/04] We hosted [the third vLLM meetup](https://robloxandvllmmeetup2024.splashthat.com/) with Roblox! Please find the meetup slides [here](https://docs.google.com/presentation/d/1A--47JAK4BJ39t954HyTkvtfwn0fkqtsL8NGFuslReM/edit?usp=sharing).
 - [2024/01] We hosted [the second vLLM meetup](https://lu.ma/ygxbpzhl) in SF! Please find the meetup slides [here](https://docs.google.com/presentation/d/12mI2sKABnUw5RBWXDYY-HtHth4iMSNcEoQ10jDQbxgA/edit?usp=sharing).
 - [2024/01] Added ROCm 6.0 support to vLLM.