fix(tests): make old JUnit 4 tests run again (#133)

Author: sverrehu

pom.xml

@@ -111,6 +111,12 @@
             <artifactId>junit-jupiter-engine</artifactId>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>