Change Gradle publication name for artifactory

This commit switches to the default publication name considered by the
artifactory plugin when it comes to publishing artifacts to the
artifactory repository.

See gh-23282

framework-bom/framework-bom.gradle

@@ -15,7 +15,7 @@ dependencies {
 
 publishing {
 	publications {
-		springFramework(MavenPublication) {
+		mavenJava(MavenPublication) {
 			artifactId = 'spring-framework-bom'
 			from components.javaPlatform
 		}