ThibautBorn

Usage of json.dumps before deserialization @import

2

Recently there was a change to deserializing when importing a new item. Now the item data is converted to a json string before the deserializer [using json.dumps](https://github.com/collective/collective.exportimport/blob/d4136c2ea360fee9d8e8d2ec42dc8f4eea31d92e/src/collective/exportimport/import_content.py#L430). This causes issues...