Since 1.21 is still fairly used I've brought it up to consistency with the 1.21.1 version. If you can I'd suggest using the 1.21.1 version as 1.21.1 should be fully compatible with 1.21 servers and has better performance with the addition of more culling.
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }