On JRE 11, users will get alert that they might fix the GrEclipse iss…

…ue by bumping to JRE 17 and using the latest.

lib-extra/src/test/java/com/diffplug/spotless/extra/groovy/GrEclipseFormatterStepSpecialCaseTest.java

@@ -30,7 +30,7 @@ public class GrEclipseFormatterStepSpecialCaseTest {
 	 */
 	@Test
 	public void issue_1657() {
-		Assertions.assertThrows(IllegalArgumentException.class, () -> {
+		Assertions.assertThrows(RuntimeException.class, () -> {
 			StepHarness.forStep(GrEclipseFormatterStep.createBuilder(TestProvisioner.mavenCentral()).build())
 					.testResourceUnaffected("groovy/greclipse/format/SomeClass.test");
 		});