add sero to COMMUNITY.md (#1935)

COMMUNITY.md

@@ -25,6 +25,7 @@ If you have built an app using SeaORM and want to showcase it, feel free to open
 - [OctoBase](https://github.com/toeverything/OctoBase) ![GitHub stars](https://img.shields.io/github/stars/toeverything/OctoBase.svg?style=social) | A light-weight, scalable, offline collaborative data backend written in 🦀 | DB: MySQL, Postgres, SQLite
 - [Ryot](https://ignisda.github.io/ryot) ([repository](https://github.com/IgnisDa/ryot)) ![GitHub stars](https://img.shields.io/github/stars/ignisda/ryot.svg?style=social) | The only self hosted tracker you will ever need | DB: MySQL, Postgres, SQLite
 - [Wikijump](https://github.com/scpwiki/wikijump) ([repository](https://github.com/scpwiki/wikijump/tree/develop/deepwell)) ![GitHub stars](https://img.shields.io/github/stars/scpwiki/wikijump.svg?style=social) | API service for Wikijump, a fork of Wikidot | DB: Postgres
+- [sero](https://github.com/clowzed/sero): Host static sites with custom subdomains as surge.sh does. But with full control and cool new features. DB: Postgres
 
 #### Game
 - [Ceobe Canteen Serve](https://github.com/Enraged-Dun-Cookie-Development-Team/Ceobe-Canteen-Serve) | A tool based on Arknights mobile game, using axum as web framework | DB: MySQL