Bump pdfjs-dist from 4.3.136 to 4.8.69

Bumps [pdfjs-dist](https://github.com/mozilla/pdf.js) from 4.3.136 to 4.8.69.
- [Release notes](https://github.com/mozilla/pdf.js/releases)
- [Commits](mozilla/pdf.js@v4.3.136...v4.8.69)

---
updated-dependencies:
- dependency-name: pdfjs-dist
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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