Merge pull request #24 from EEWBot/renovate/org.jreleaser-1.x

Update plugin org.jreleaser to v1.21.0

Author: yanorei32

build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
     id("java")
     `maven-publish`
     signing
-    id("org.jreleaser") version "1.18.0"
+    id("org.jreleaser") version "1.21.0"
     id("me.champeau.jmh") version "0.7.3"
 }