Update Buildpacks strategy

[SaschaSchwarze0]

Changes

This pull request updates several things in the Buildpacks strategy samples:

• Heroku is updated to Ubuntu Bionic (22). This required a change in the sample as Heroku does now require a Procfile to define the entrypoint. The e2e can therefore only succeed after Add Procfile for Heroku example sample-nodejs#7 is merged.
• The platform API is updated to 0.7. This includes the change to have analyze before detect
• The layers and cache directories are changed to include a .shp directory in the path under /tmp. The reason is that /tmp/cache can be overlapping with a directory used by build tools.

Fixes #1280
Fixes #1295

Submitter Checklist

• Includes tests if functionality changed/was added
• Includes docs if changes are user-facing
• Set a kind label on this PR
• Release notes block has been filled in, or marked NONE

Release Notes

Buildpacks sample build strategies are updated to the latest Heroku version and a newer platform API version

[qu1queee]

seems familiar.

nice

/lgtm

[HeavyWombat]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: HeavyWombat

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [HeavyWombat]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[qu1queee]

/lgtm

[qu1queee]

/lgtm