Update Anchore Scan image to latest version

Background

The anchore-scan job image should be updated to use the newest version of cli. The current version is registry1.dso.mil/ironbank/anchore/cli/cli:0.9.1 and Registry1 has 0.9.4 available.

DoD

• anchore-scan job's image updated to registry1.dso.mil/ironbank/anchore/cli/cli:0.9.4

AC

• Updated image has been successfully tested in staging