Revert publish plugin

Working around this issue:
vanniktech/gradle-maven-publish-plugin#920

Author: squarejesse

gradle/libs.versions.toml

@@ -24,4 +24,4 @@ test-assertj = { module = "org.assertj:assertj-core", version = "3.27.3" }
 test-assertk = "com.willowtreeapps.assertk:assertk:0.28.1"
 test-jimfs = "com.google.jimfs:jimfs:1.3.0"
 test-junit = { module = "junit:junit", version = "4.13.2" }
-vanniktech-publish-plugin = { module = "com.vanniktech:gradle-maven-publish-plugin", version = "0.31.0" }
+vanniktech-publish-plugin = { module = "com.vanniktech:gradle-maven-publish-plugin", version = "0.30.0" }