Item update failed

Fix needs to be released at the same time as MODDICORE-137

This issue has been observed in a iris-cap2.int.aws.folio.org environment, and reported by CPT

When attempting to update an item using "PTF - Updates Success - 2" job profile - the import is completed with errors (Discarded status at item column on the summary page)
 the following message is observed in mod-inventory logs
"07:01:12 [] [] [] [] ERROR dateItemEventHandler Error updating inventory Item: org.folio.processing.exceptions.MappingException: java.lang.NullPointerException"