chore: publishされない問題を修正

build.gradle.kts

@@ -1,5 +1,3 @@
-import org.apache.tools.ant.taskdefs.email.Header
-
 plugins {
     kotlin("jvm") version "1.9.0"
     id("maven-publish")
@@ -52,4 +50,13 @@ publishing{
             }
         }
     }
+
+    publications {
+        register<MavenPublication>("maven") {
+            groupId = "dev.usbharu"
+            artifactId = "http-signature"
+            version = project.version.toString()
+            from(components["kotlin"])
+        }
+    }
 }