deps(submodule): bump external/inatrace-backend

Bumps [external/inatrace-backend](https://github.com/agstack/inatrace-backend) from `2884c44` to `4df7047`.
- [Commits](agstack/inatrace-backend@2884c44...4df7047)

---
updated-dependencies:
- dependency-name: external/inatrace-backend
  dependency-version: 4df70478e8481322677fe34e52389b66a35b49e9
  dependency-type: direct:production
...

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