Open api generated Severity does not contain Unclassified

[de-jcup]

Situation

com.mercedesbenz.sechub.commons.model.Severity contains
Unclassified

but com.mercedesbenz.sechub.api.internal.gen.model.Severity does not

Wanted

com.mercedesbenz.sechub.api.internal.gen.model.Severity shall contain also Unclassified.