Disable invalid-name warning in run_rego

[adhilto]

🗣 Description

Disable the invalid-name Pylint warning in run_rego.py

💭 Motivation and context

A line in run_rego.py that hasn't been modified in almost a year suddenly has started causing issues for Pylint. Likely because Pylint released a new version 2 days ago. https://github.com/pylint-dev/pylint/releases/tag/v4.0.0

The guilty line is:

OPA_EXE = None

Pylint is mad because it's uppercase not snake case (opa_exe). However, it's acting like a constant so upper case is appropriate.

🧪 Testing

Manually ran pylint -d R0913,R0914,R0915,R1702,W0718,W0719,R0801 .\scubagoggles --recursive=y

✅ Pre-approval checklist

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• Changes are limited to a single goal - eschew scope creep!
• If applicable, All future TODOs are captured in issues, which are referenced in the PR description.
• The relevant issues PR resolves are linked preferably via closing keywords.
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• These code changes follow cisagov code standards.
• All relevant repo and/or project documentation has been updated to reflect the changes in this PR.
• Tests have been added and/or modified to cover the changes in this PR.
• All new and existing tests pass.

✅ Pre-merge Checklist

• This PR has been smoke tested to ensure main is in a functional state when this PR is merged.
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✅ Post-merge Checklist

• Delete the branch to clean up.
• Close issues resolved by this PR if the closing keywords did not activate.