Upgrade `pip` and related tools to the latest version in plugin venvs
Merge Request Checklist
- Link to an issue
- Include the proposed fix or feature
- Include and update tests for the modified code
- Include a documentation change
- Add a CHANGELOG.md entry in the Unreleased section
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Closes #2372 (closed)
This was my hack fix to address #2372 (closed) - it upgrades pip before installing any dependencies. I don't know what the side effects of this are and I'm open to a better solution. But we're using this fork in production and it's solved the issue.