set publish url to github url

Author: jdaugherty

.github/workflows/gradle.yml

@@ -66,7 +66,7 @@ jobs:
         env:
           MAVEN_PUBLISH_USERNAME: ${{ secrets.GITHUB_ACTOR }}
           MAVEN_PUBLISH_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
-          MAVEN_PUBLISH_URL: ${{ secrets.MAVEN_PUBLISH_SNAPSHOT_URL }}
+          MAVEN_PUBLISH_URL: 'https://maven.pkg.github.com/longwa/build-test-data'
           GRAILS_PUBLISH_RELEASE: "false"
         working-directory: ./plugin
         run: ../gradlew publish