Add Javadoc since to BuildInfoMojo.skip

See gh-34482

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/main/java/org/springframework/boot/maven/BuildInfoMojo.java

@@ -99,6 +99,7 @@ public class BuildInfoMojo extends AbstractMojo {
 
 	/**
 	 * Skip the execution.
+	 * @since 3.1.0
 	 */
 	@Parameter(property = "spring-boot.build-info.skip", defaultValue = "false")
 	private boolean skip;