Upgrade to latest version of Gradle plugin-publish plugin

Author: lauzadis

gradle/libs.versions.toml

@@ -16,4 +16,4 @@ smithy-gradle-base-plugin = { module = "software.amazon.smithy.gradle:smithy-bas
 junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-version" }
 
 [plugins]
-plugin-publish = { id = "com.gradle.plugin-publish", version = "2.0.0"}
+plugin-publish = { id = "com.gradle.plugin-publish", version = "1.3.1"}