chore(deps): Bump policy-mcp from 76ee6a6 to b6ddb15

Bumps [policy-mcp](https://github.com/semcp/policy-mcp-rs) from `76ee6a6` to `b6ddb15`.
- [Commits](https://github.com/semcp/policy-mcp-rs/compare/76ee6a66c24b743a6cc2b7372f5a61d36b2ec140...b6ddb15a0067d442cdc545a28949521c510669a2)

---
updated-dependencies:
- dependency-name: policy-mcp
  dependency-version: b6ddb15a0067d442cdc545a28949521c510669a2
  dependency-type: direct:production
...

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Author: dependabot[bot]