Remove validation of deprecated io.buildpacks.stack.id

[matthewrobertson]

Summary

Pack still has logic that validates the builder and run image have a matching value set for the io.buildpacks.stack.id here. This label is deprecated as of platform v0.12 so we should probably weaken this validation.

---

Reproduction

Run a pack build using a packeto builder and google run image:

pack build stack-validation \
  --builder paketobuildpacks/builder-jammy-base
  --run-image gcr.io/buildpacks

Current behavior

Build fails with an error message about mistmatched stack IDs

run-image stack "google.22" does not match builder stackID...

Expected behavior

The builder and run image are both derived from Ubuntu Jammy so we should allow the build proceed

---

Environment

Linux

pack info

All versions of pack impacted

docker info

N/A

[natalieparellano]

This might benefit from some synchronous discussion so I've added it as a "future topic" for one of our Working Groups

[natalieparellano]

Discussed in 3/28 Working Group: we think we can replace the error with a warning. The warning should probably note that stacks are deprecated so that folks who are not using stacks can simply ignore it.