fix: body-parser / brace-expansion のセキュリティアラートを pnpm overrides で解消

[devin-ai-integration]

Summary

Dependabot の open アラート 2 件を pnpm overrides の更新で解消しました。

• body-parser (GHSA-v422-hmwv-36x6, low): >= 2.0.0, < 2.3.0 が脆弱。override を追加し >=2.3.0 に固定 (2.2.2 → 2.3.0)。
• brace-expansion (GHSA-3jxr-9vmj-r5cp, high): >= 3.0.0, < 5.0.7 が脆弱。既存 override <5.0.6: '>=5.0.6' を <5.0.7: '>=5.0.7' に更新 (5.0.6 → 5.0.7)。

pnpm-workspace.yaml の overrides 更新 + pnpm install による pnpm-lock.yaml 反映のみ。いずれも推移的依存。

Link to Devin session: https://app.devin.ai/sessions/2c68d16cb6884e5383b19db8e2734d59
Requested by: @ara-ta3

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