fix: Allow to use env variable in schema properties

[cv65kr]

Reason for This PR

closes: #1586

Description of Changes

License Acceptance

By submitting this pull request, I confirm that my contribution is made under the terms of the MIT license.

PR Checklist

[Author TODO: Meet these criteria.]
[Reviewer TODO: Verify that these criteria are met. Request changes if not]

• All commits in this PR are signed (git commit -s).
• The reason for this PR is clearly provided (issue no. or explanation).
• The description of changes is clear and encompassing.
• Any required documentation changes (code and docs) are included in this PR.
• Any user-facing changes are mentioned in CHANGELOG.md.
• All added/changed functionality is tested.

[codecov]

Codecov Report

Merging #1768 (9be224d) into master (fce8455) will not change coverage.
The diff coverage is n/a.

❗ Current head 9be224d differs from pull request most recent head a694b83. Consider uploading reports for the commit a694b83 to get more accurate results

@@           Coverage Diff           @@
##           master    #1768   +/-   ##
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  Coverage   37.29%   37.29%           
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  Files          16       16           
  Lines         866      866           
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  Hits          323      323           
  Misses        517      517           
  Partials       26       26           

[rustatian]

lgtm, thanks @cv65kr