component/depot_tools: fix typo on revision

as a result, this checkout was not pinned and software was not
reproducible
14 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed Cloudooo.UnitTest-Master

00:06:54

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:30:52

passed SlapOS-Master.StandaloneDeploymentScriptTest-Debian.Buster

00:31:55

passed SlapOS.Eggs.UnitTest-Master.Python2

00:16:46

passed SlapOS.Eggs.UnitTest-Master.Python3

00:16:17

passed SlapOS.KVM.ResilienceTest-Master

00:21:11

failed SlapOS.SoftwareReleases.IntegrationTest-Master

06:08:12

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

00:26:51

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:27:36

passed SlapOS-Master.StandaloneDeploymentScriptTest-Debian.Buster

00:27:55

passed SlapOS.Eggs.UnitTest-Master.Python2

00:14:42

passed SlapOS.Eggs.UnitTest-Master.Python3

00:14:46

passed SlapOS.KVM.ResilienceTest-Master

00:21:04

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

00:24:46