Add test engines as surefire plugin dependencies

This removes junit-vintage-engine as a test dependency
as well as kotlintest-runner-junit5.
The engines are only needed during test execution, but should
not be available for test compilation.

For this to work, the latest surefire plugin is required.

pmd-python/pom.xml

@@ -76,11 +76,6 @@
             <artifactId>junit</artifactId>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.junit.vintage</groupId>
-            <artifactId>junit-vintage-engine</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>net.sourceforge.pmd</groupId>
             <artifactId>pmd-test</artifactId>