chore: use cjs extension with scripts

[benmccann]

Description

Use .cjs extension with Node.js scripts

Additional context

I was looking at what would be required to set "type": "module". This is a change that can be broken off easily and done ahead of time in a way that works with or without setting "type": "module"

Longer-term we'll probably want to convert these to ESM, but that'd make the migration more of a big bang and it'd probably be easier to do it incrementally

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
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[benmccann]

I pushed an update to rename all files in the scripts directories. I hadn't done this earlier because the tests were failing locally, but I've discovered that happens for me even on main and is unrelated to this change

[Shinigami92]

question: Would it be better to use esno and use TS files for most of these files?
That way it could be a bit better typed and therefore easier for contributors to work with.