Bump pdfplumber from 0.11.8 to 0.11.9

Bumps [pdfplumber](https://github.com/jsvine/pdfplumber) from 0.11.8 to 0.11.9.
- [Release notes](https://github.com/jsvine/pdfplumber/releases)
- [Changelog](https://github.com/jsvine/pdfplumber/blob/stable/CHANGELOG.md)
- [Commits](jsvine/pdfplumber@v0.11.8...v0.11.9)

---
updated-dependencies:
- dependency-name: pdfplumber
  dependency-version: 0.11.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]