upgrade springboot version and some related unit test fixes (#904)

* upgrade springboot version and some related unit test fixes

* removed log for test

* removed junit version property

webgoat-integration-tests/src/test/java/org/owasp/webgoat/WebWolfTest.java

@@ -1,6 +1,6 @@
 package org.owasp.webgoat;
 
-import static org.junit.Assert.assertTrue;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.IOException;
 import java.util.HashMap;