Error building test deck for CMS75v8

[antrabaey]

attempt to build test deck in Cypress 5.2 with CMS75v8 included

Observe error:

error text for copy/paste
invalid date on /vendor/bundle/ruby/2.6.0/gems/activesupport-5.2.3/lib/active_support/core_ext/date_time/calculations.rb:62:in `civil'

[antrabaey]

I was able to re-build a test deck without those errors, so I don't need it fixed, but if you want to investigate, please go ahead