Update plugin hivemq-extension to v4

Author: renovate[bot]

gradle/libs.versions.toml

@@ -15,6 +15,6 @@ testcontainers-hivemq = { module = "org.testcontainers:hivemq", version.ref = "t
 testcontainers-junitJupiter = { module = "org.testcontainers:junit-jupiter", version.ref = "testcontainers" }
 
 [plugins]
-hivemq-extension = { id = "com.hivemq.extension", version = "3.2.0" }
+hivemq-extension = { id = "com.hivemq.extension", version = "4.0.0" }
 defaults = { id = "io.github.sgtsilvio.gradle.defaults", version = "0.2.0" }
 license = { id = "com.github.hierynomus.license", version = "0.16.1" }