Zenodo ingestor fix

[fbacall]

Summary of changes

• Some updates to the Zenodo ingestor to cope with changes to their API
• Use case-insensitive matching of incoming license IDs
• Update fixtures containing Zenodo responses

Motivation and context

DReSA team reported Zenodo ingestor was failing to scrape resources.

Checklist

• I have read and followed the CONTRIBUTING guide.
• I confirm that I have the authority necessary to make this contribution on behalf of its copyright owner and agree
  to license it to the TeSS codebase under the
  BSD license.