erp5_document_scanner_ui_test: add missing bt5 dependency

7 jobs for feat/external_validator_test
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

passed ERP5.PerformanceTest-Master

failed ERP5.UnitTest-Master

passed SlapOS.Eggs.UnitTest-Master.Python2

00:29:42

passed SlapOS.Eggs.UnitTest-Master.Python3

00:20:59

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python3