chore(deps): 🔧 Require review for dev dependency updates

[haskou]

Summary

• Disable automerge for non-major dev dependency updates.
• Keep runtime dependency updates eligible for patch releases separately.
• Prevent tooling updates such as Prettier or eslint config from being automerged when they require formatting or lint changes.

CI context

A Renovate branch updating tooling failed lint because the new Prettier/eslint config expected formatting changes that Renovate did not apply. Dev dependency updates now require review instead of automerge.

Validation

• Parsed renovate.json with JSON.parse.
• Ran Prettier on renovate.json.
• yarn format:check.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[haskou]

Closing: this changed Renovate policy instead of fixing the dependency-update failure. Keeping automerge and fixing the actual failing update path instead.