Sync python runtime buildpack acceptance tests with most up to date published versions.
Sync python runtime buildpack acceptance tests with most up to date published versions.

I also trimmed down the size of the list we test. These acceptance tests were starting to
blow up the CI server.

PiperOrigin-RevId: 417512208
Change-Id: Ibe0e905181ffcaa5f26105058767bc12e87542f4

GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks