Use constructor injection and MockitoBean

Replace field injection with constructor injection and replaced the deprecated MockBean with MockitoBean

src/main/java/de/ozgcloud/eingang/xta/XtaRunner.java

@@ -23,7 +23,8 @@
  */
 package de.ozgcloud.eingang.xta;
 
-import org.springframework.beans.factory.annotation.Autowired;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
 import org.springframework.context.ApplicationListener;
 import org.springframework.context.event.ContextRefreshedEvent;
 import org.springframework.stereotype.Component;
@@ -34,13 +35,13 @@ import de.ozgcloud.xta.client.exception.XtaClientException;
 
 @Log4j2
 @Component
+@RequiredArgsConstructor
 class XtaRunner implements ApplicationListener<ContextRefreshedEvent> {
 
-	@Autowired
-	private XtaService service;
+	private final XtaService service;
 
 	@Override
-	public void onApplicationEvent(ContextRefreshedEvent event) {
+	public void onApplicationEvent(@NonNull ContextRefreshedEvent event) {
 		LOG.info("Fetching XTA Messages");
 		runGetXtaMessages();
 	}