fix: Reproduced the root cause on an actual Apple Silicon machine

[singlaamitesh]

Fixes #4650

Fixes #0000

Tasks

• Reviewed contribution guidelines
• PR is descriptively titled 📑 and links the original issue above 🔗
• Tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR
  Run tests locally to check for errors.
• Commits are in uniquely-named feature branch and has no merge conflicts 📁
• Updated documentation pages (if applicable)
• Updated CHANGELOG.rst (if applicable)

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Reproduced the root cause on an actual Apple Silicon machine: configure's Rosetta relaunch makes the shell x86_64 but an arm64-only Homebrew python3 still execs natively as arm64 (verified via arch -x86_64 bash -c python3 ...), so pinned deps like extractcode-7z fail to resolve; added a CONTRIBUTING.rst note (matching the file's existing RedHat-troubleshooting-note style) documenting the failure and the x86_64-Python-via-Rosetta workaround, plus a CHANGELOG.rst entry.

How this was tested: X

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