software/osie-coupler: use most recent release

Also copy generated binary to buildout root's bin folder.
9 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed Cloudooo.UnitTest-Master

00:10:09

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:41:45

failed ERP5.StandaloneDeploymentScriptTest-Debian.Buster.Master

15:02:24

passed SlapOS.Eggs.UnitTest-Master.Python2

00:26:04

passed SlapOS.Eggs.UnitTest-Master.Python3

00:25:16

passed SlapOS.Eggs.UnitTest-Master.Python3Next

00:47:56

failed SlapOS.SoftwareReleases.IntegrationTest-Master

10:04:34

passed SlapOS.Theia.ResilienceTest-Master-ERP5

09:06:29

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

15:02:36