chore(maven): update dependency org.apache.maven.plugins:maven-surefire-plugin to v3.5.6

Author: renovate[bot]

pom.xml

@@ -119,7 +119,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.5.5</version>
+                <version>3.5.6</version>
                 <configuration>
                     <additionalClasspathElements>
                         <additionalClasspathElement>src/test/java/</additionalClasspathElement>
@@ -283,7 +283,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-surefire-plugin</artifactId>
-                    <version>3.5.5</version>
+                    <version>3.5.6</version>
                 </plugin>
                 <plugin>
                     <groupId>org.sonarsource.scanner.maven</groupId>