chore: update claude model from sonnet-4-5 to sonnet-4-6 in auto-review workflow

[devin-ai-integration]

Summary

Updates the explicit model parameter in the Claude auto-review workflow from claude-sonnet-4-5-20250929 to claude-sonnet-4-6.

The explicit model override is kept (rather than relying on the action's default) because the action ref is pinned to 1483e05..., which predates the model update in WalletConnect/actions and has claude-sonnet-4-20250514 as its default.

Also fixes a missing newline at end of file.

Review & Testing Checklist for Human

• Confirm claude-sonnet-4-6 is a valid Anthropic model identifier (no date suffix needed)
• Verify the next auto-review run on a PR uses the expected model (check workflow logs)

Notes

• Requested by: @bkrem
• Devin run: https://app.devin.ai/sessions/c18f422e01cc4579ba72c77e956a411f

[changeset-bot]

⚠️ No Changeset found

Latest commit: cb507a8

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[devin-ai-integration]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud