Filesystem persistence fails to compile in native mode

Filesystem persistence native compilation failing due to: https://github.com/oracle/graal/issues/460. Potentially fixed by upgrading to GraalVM v21.

Caused by: com.oracle.svm.core.jdk.UnsupportedFeatureError: ObjectOutputStream.writeObject()
at com.oracle.svm.core.util.VMError.unsupportedFeature(VMError.java:87)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:68)
at org.drools.core.marshalling.impl.KogitoSerializablePlaceholderResolverStrategy$SerializablePlaceholderStrategyContext.write(KogitoSerializablePlaceholderResolverStrategy.java:95)
at org.drools.serialization.protobuf.PersisterHelper.writeStrategiesIndex(PersisterHelper.java:212)
at org.drools.serialization.protobuf.PersisterHelper.writeToStreamWithHeader(PersisterHelper.java:162)
at org.kie.kogito.process.impl.marshalling.ProcessInstanceMarshaller.marshallProcessInstance(ProcessInstanceMarshaller.java:86)
at org.kie.kogito.persistence.filesystem.FileSystemProcessInstances.storeProcessInstance(FileSystemProcessInstances.java:145)
at org.kie.kogito.persistence.filesystem.FileSystemProcessInstances.create(FileSystemProcessInstances.java:118)

NativeProcessDataIndexInfinispanIT and NativeProcessDataIndexMongoDBIT canbe enabled once this is fixed.