Update gradle-publish.yml

.github/workflows/gradle-publish.yml

@@ -33,7 +33,7 @@ jobs:
     - name: Build with Gradle
       uses: gradle/gradle-build-action@bd5760595778326ba7f1441bcf7e88b49de61a25 # v2.6.0
       with:
-        arguments: build
+        arguments: build javadoc javadocJar sourceJar
 
     # The USERNAME and TOKEN need to correspond to the credentials environment variables used in
     # the publishing section of your build.gradle