CI: Backend unit tests fails because devfile registry was updated (fix assertion)

This is a clone of issue OCPBUGS-1828. The following is the description of the original issue:
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This is a clone of issue OCPBUGS-1786. The following is the description of the original issue:
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This is a clone of issue OCPBUGS-1677. The following is the description of the original issue:
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Description of problem:
pkg/devfile/sample_test.go fails after devfile registry was updated (https://github.com/devfile/registry/pull/126)

This issue is about updating our assertion so that the CI job runs successfully again. We might want to backport this as well.

OCPBUGS-1678 is about updating the code that the test should use a mock response instead of the latest registry content OR check some specific attributes instead of comparing the full JSON response.

Version-Release number of selected component (if applicable):
4.12

How reproducible:
Always

Steps to Reproduce:
1. Clone openshift/console
2. Run ./test-backend.sh

Actual results:
Unit tests fail

Expected results:
Unit tests should pass again

Additional info: