Bump maven-surefire-plugin from 2.22.2 to 3.5.4 (#8)

This fixes compatibility with junit-platform-runner 1.14.2 that was updated in PR #15.
The old surefire plugin version was causing test failures with:
  ERROR: org/junit/platform/engine/OutputDirectoryCreator

Author: kwent

pom.xml

@@ -70,7 +70,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.22.2</version>
+                <version>3.5.4</version>
                 <configuration>
                     <systemPropertyVariables>
                         <property>