DATAES-877 - Update test logging dependency.

Original PR: spring-projects#491

Author: dependabot[bot]

pom.xml

@@ -20,7 +20,7 @@
 	<properties>
 		<commonslang>2.6</commonslang>
 		<elasticsearch>7.8.0</elasticsearch>
-		<log4j>2.9.1</log4j>
+		<log4j>2.13.2</log4j>
 		<springdata.commons>2.4.0-SNAPSHOT</springdata.commons>
 		<netty>4.1.50.Final</netty>
 		<java-module-name>spring.data.elasticsearch</java-module-name>