chore: revert shrinkwrap, as it seems to break Windows

[RomainMuller]

Windows installation test has been failing with an odd error since the
shrinkwrap commit was introduced. Attempting to un-do this as a way to
confirm this is indeed what was causing problems.

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[mergify]

Pull Request Checklist

• Testing
  • Unit test added (prefer not to modify an existing test, otherwise, it's probably a breaking change)
• Title and Description
  • Change type: title prefixed with fix, feat and module name in parens, which will appear in changelog
  • Title: use lower-case and doesn't end with a period
  • Breaking?: last paragraph: 'BREAKING CHANGE: <describe what changed + link for details>'
  • Issues: Indicate issues fixed via: 'Fixes #xxx' or 'Closes #xxx'

[mergify]

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