Always upload to production zenodo

[sk1p]

This means we don't have to babysit the deposition and update the deposition ID if the sandbox is wiped etc...

The deposition is not published automatically, so it's still a good way of checking the metadata before publishing the full release.

Contributor Checklist:

• I have added myself to the creators.json file
• I have added a changelog entry for my contribution
• I have added/updated documentation for all user-facing changes
• I have added/updated test cases

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.81%. Comparing base (4bd6b3b) to head (fb36e23).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #94   +/-   ##
=======================================
  Coverage   86.81%   86.81%           
=======================================
  Files          14       14           
  Lines        1191     1191           
  Branches      171      171           
=======================================
  Hits         1034     1034           
  Misses        105      105           
  Partials       52       52           

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[uellue]

Looks good, try merge & RC, I'd say. Easiest way to test :-)