Updates poi-ooxml to latest version (v5.2.3)

There have been many changes in poi-ooxml 5.x (https://poi.apache.org/changes.html)
Some changes done related to closing of OPCPackage in poi-ooxml 5.x affecting basyx-java-sdk
Adapts AASXToMetamodelConverter as per the changes in poi-ooxml 5.x
Refactors test cases associated with the latest changes in AASXToMetamodelConverter i.e., releasing of resources.
The changes in this PR is not a breaking change

Signed-off-by: Mohammad Ghazanfar Ali Danish ghazanfar.danish@iese.fraunhofer.de

eclipse-basyx / basyx-java-sdk