build(deps): bump third-party/doxyconfig from 6d145da to 7858399 (#…

…106)

Bumps [third-party/doxyconfig](https://github.com/LizardByte/doxyconfig) from `6d145da` to `7858399`.
- [Commits](LizardByte/doxyconfig@6d145da...7858399)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>