build(deps): bump third-party/doxyconfig from ba47416 to a9f0c38 (#216)

Bumps [third-party/doxyconfig](https://github.com/LizardByte/doxyconfig) from `ba47416` to `a9f0c38`.
- [Commits](LizardByte/doxyconfig@ba47416...a9f0c38)

---
updated-dependencies:
- dependency-name: third-party/doxyconfig
  dependency-version: a9f0c38766e53d29f1141098db237e51ba3d64d8
  dependency-type: direct:production
...

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Author: dependabot[bot]