project: don't use deprecated assignRoleToSecurityGroup

We don't even use the new updateLocalRolesOnSecurityGroups instead,
because roles are supposed to be applied by an interaction workflow.
5 jobs for fix/stripe_sql_queue in 0 seconds (queued for 1 second)
Status Job ID Name Coverage
  External
failed ERP5.UnitTest-Zope2

03:58:08

passed SlapOS.Eggs.UnitTest-Master.Python2

00:12:52

passed SlapOS.Eggs.UnitTest-Master.Python3

00:16:52

passed SlapOS.Eggs.UnitTest-Master.Python2

00:12:34

passed SlapOS.Eggs.UnitTest-Master.Python3

00:15:30