Sling Engine build fails on Java 17 due to JMock error:module java.base does not "opens java.lang" to unnamed module @2613a93a

[ERROR] org.apache.sling.engine.impl.request.RequestDataTest.testDots  Time elapsed: 0.016 s  <<< ERROR!
java.lang.ExceptionInInitializerError
	at net.sf.cglib.core.KeyFactory$Generator.getProtectionDomain(KeyFactory.java:136)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:206)
	at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:149)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:109)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:105)
	at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:71)
	at org.jmock.lib.legacy.ClassImposteriser.proxyClass(ClassImposteriser.java:97)
	at org.jmock.lib.legacy.ClassImposteriser.imposterise(ClassImposteriser.java:66)
	at org.jmock.Mockery.mock(Mockery.java:148)
	at org.jmock.Mockery.mock(Mockery.java:124)
	at org.apache.sling.engine.impl.request.RequestDataTest.setup(RequestDataTest.java:61)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.RunBefores.invokeMethod(RunBefores.java:33)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:364)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:272)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:237)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:158)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:428)
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)
	at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:562)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:548)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @2613a93a
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
	at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
	at net.sf.cglib.core.ReflectUtils$1.run(ReflectUtils.java:52)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
	at net.sf.cglib.core.ReflectUtils.<clinit>(ReflectUtils.java:42)
	... 41 more