CICD: Provide the correct GitHub action contexts

[cafferata]

Provide the correct GitHub action contexts by using the dollar sign and curly braces, as ${{ env.TEST_RESULTS }}.

GitHub docs

• https://docs.github.com/en/actions/learn-github-actions/contexts#vars-context
• https://docs.github.com/en/actions/learn-github-actions/variables#using-contexts-to-access-variable-values

Fixes #2841

[cafferata]

The current warning is not related to #2831.

Annotations

1 warning

integration-tests (BIND)
No files were found with the provided path: /tmp/test-results. No artifacts will be uploaded.

See PR: Run all tests summary for GitHub action run #7820175228 where it already took place.

[tlimoncelli]

Thanks!