key update for new test server

[joaquinvanschoren]

After the migration to the new test server, the old API keys don't work anymore. This updates them to special keys that are recognized by the new test server.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 52.74%. Comparing base (4b1bdf4) to head (4b4c274).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #1502       +/-   ##
============================================
- Coverage    79.90%   52.74%   -27.16%     
============================================
  Files           36       36               
  Lines         4349     4351        +2     
============================================
- Hits          3475     2295     -1180     
- Misses         874     2056     +1182     

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