Remove Renovate

[jpwilliams]

Summary

Dependabot is a lot better at non-spammy updates now. We're not using most of the feature set of renovate, so let's just remove the chaff.

Checklist

• [ ] ~Added a docs PR that references this PR~ N/A
• [ ] ~Added unit/integration tests~ N/A
• [x] Added changesets if applicable

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: c9f5c6c2334efa1f70d5e22dc2e057ea4ec1ee82

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