Update plugin metadata to v0.6.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -7,6 +7,6 @@ slf4j-api = { module = "org.slf4j:slf4j-api", version.ref = "slf4j" }
 [plugins]
 nexusPublish = { id = "io.github.gradle-nexus.publish-plugin", version = "1.3.0" }
 defaults = { id = "io.github.sgtsilvio.gradle.defaults", version = "0.2.0" }
-metadata = { id = "io.github.sgtsilvio.gradle.metadata", version = "0.5.0" }
+metadata = { id = "io.github.sgtsilvio.gradle.metadata", version = "0.6.0" }
 javadocLinks = { id = "io.github.sgtsilvio.gradle.javadoc-links", version = "0.8.0" }
 license = { id = "com.github.hierynomus.license", version = "0.16.1" }