chore(deps): bump unstructured from 0.10.27 to 0.18.3

---
updated-dependencies:
- dependency-name: unstructured
  dependency-version: 0.18.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]