Updating dependencies in buildpack.toml

Updating dependencies in buildpack.toml

Updates build to use GenerateBillOfMaterials `postal` function (paket…

…o-buildpacks#333)

* Updates build to use GenerateBillOfMaterials `postal` function

- Removes PlanRefinery
- Updates to using postal.Deliver as postal.Install is deprecated

* Updates buildpack API version

Updating dependencies in buildpack.toml

Updating dependencies in buildpack.toml

Updating github-config

Updating github-config

update to api 0.4 (paketo-buildpacks#264)

Co-authored-by: Tim Hitchener <[email protected]>

remove debug prints

Fix test bug.

The "simple app with BP_NODE_VERSION set and a buildpack.yml" test
was modifying the original testdata source instead of the occam-sourced
testdata.

Signed-off-by: Arjun Sreedharan <[email protected]>
Co-authored-by: Arjun Sreedharan <[email protected]>