Remove Playwright from Renovate config

[jattasNI]

Pull Request

🤨 Rationale

Milan pointed out Renovate will fail to update Playwright because:

1. there is no Nuget version corresponding to the latest NPM version
2. there was a breaking change between 1.37 and 1.38

This will block automatic updates for all of our devDependencies.

👩‍💻 Implementation

1. Remove Playwright from the list of dev dependencies updated by Renovate
2. Filed tech debt Uptake newer Playwright version and fix breaking change #1544 to address this

🧪 Testing

Once this goes in I'll inspect #1537 to ensure it no longer lists Playwright

✅ Checklist

• I have updated the project documentation to reflect my changes or determined no changes are needed.