Fix spring-boot-actuator-autoconfigure test logs

Add log4j to `spring-boot-actuator-autoconfigure` test scope so that
we get valid log output.

See gh-14148

spring-boot-project/spring-boot-actuator-autoconfigure/pom.xml

@@ -425,6 +425,16 @@
 				</exclusion>
 			</exclusions>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-slf4j-impl</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-api</artifactId>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.aspectj</groupId>
 			<artifactId>aspectjrt</artifactId>