Bump apidoctor from 4c2e80c to a990589

Bumps [apidoctor](https://github.com/OneDrive/apidoctor) from `4c2e80c` to `a990589`.
- [Commits](OneDrive/apidoctor@4c2e80c...a990589)

---
updated-dependencies:
- dependency-name: apidoctor
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]