[ Bugfix ] - Fix export to artemis
Problem with export to Artemis was related to the subpath filtering logic in ShoppingBasketService.rePackageGitLabProjectZip which did only include metadata.yaml in the Zip file and causing the Cannot invoke \"java.util.zip.ZipEntry.isDirectory()\" because \"currentEntry\" is null reported here https://sharing-codeability.uibk.ac.at/sharing/codeability-sharing-platform/-/issues/203
Simply changing the method's call parameter to null in ShoppingBasketService.getRepositoryZip fixes this behaviour.