chore(deps-dev): update pdfplumber requirement from >=0.10 to >=0.11.9

Updates the requirements on [pdfplumber](https://github.com/jsvine/pdfplumber) to permit the latest version.
- [Release notes](https://github.com/jsvine/pdfplumber/releases)
- [Changelog](https://github.com/jsvine/pdfplumber/blob/stable/CHANGELOG.md)
- [Commits](jsvine/pdfplumber@v0.10.0...v0.11.9)

---
updated-dependencies:
- dependency-name: pdfplumber
  dependency-version: 0.11.9
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -51,7 +51,7 @@ dev = [
     "pytest-asyncio>=0.24",
     "pytest-benchmark>=4.0",
     "pypdf>=4.0",
-    "pdfplumber>=0.10",
+    "pdfplumber>=0.11.9",
     "mypy>=1.8",
     "ruff>=0.3",
     "reportlab>=4.0,<4.2",