Adjust Gradle to JUnit 5

Parallel Test execution
Gradle Caching
Explicitly request for latest JavaCC 7.0.10

Author: manticore-projects

src/test/java/net/sf/jsqlparser/statement/select/SpeedTest.java

@@ -23,7 +23,10 @@
 import net.sf.jsqlparser.test.TestException;
 import net.sf.jsqlparser.util.TablesNamesFinder;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.parallel.Execution;
+import org.junit.jupiter.api.parallel.ExecutionMode;
 
+@Execution(ExecutionMode.CONCURRENT)
 public class SpeedTest {
 
     private final static int NUM_REPS_500 = 500;