fix(deps): bump pypdf from 6.14.2 to 6.15.0 (#43)

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 6.14.2 to 6.15.0.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](py-pdf/pypdf@6.14.2...6.15.0)

---
updated-dependencies:
- dependency-name: pypdf
  dependency-version: 6.15.0
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -71,7 +71,7 @@ dependencies = [
     "pandas>=2.3.1",
     "pillow>=12.3.0",
     "pydantic>=2.11.7",
-    "pypdf>=6.14.2",
+    "pypdf>=6.15.0",
     "python-dotenv>=1.1.1",
     "pyvis>=0.3.2",
     "pyyaml>=6.0.2",