Fixed checkstyle errors causing build failures.

unit-of-work/pom.xml

@@ -47,6 +47,7 @@
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
+            <version>5.0.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>