Apply ArtifactoryPlugin in RootProjectPlugin

Issue gh-10602

buildSrc/src/main/groovy/io/spring/gradle/convention/RootProjectPlugin.groovy

@@ -34,6 +34,7 @@ class RootProjectPlugin implements Plugin<Project> {
 		pluginManager.apply(NoHttpPlugin)
 		pluginManager.apply(SpringNexusPublishPlugin)
 		pluginManager.apply(CheckProhibitedDependenciesLifecyclePlugin)
+		pluginManager.apply(ArtifactoryPlugin)
 		pluginManager.apply("org.sonarqube")
 
 		project.repositories.mavenCentral()