packer: add debian 12 image for vm bootstrap

5 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:34:37

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster.Master

09:43:25

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Bullseye

00:33:00

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

00:28:06

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

07:34:50