Update dependency org.apache.maven.plugins:maven-surefire-plugin to v3.5.6

Author: renovate[bot]

pom.xml

@@ -149,7 +149,7 @@
                 <!-- Plugin for Unit Tests -->
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.5.2</version>
+                <version>3.5.6</version>
 
                 <configuration>
                     <junitArtifactName>org.junit.jupiter:junit-jupiter</junitArtifactName>