Bump pypdf from 5.1.0 to 6.4.2

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 5.1.0 to 6.4.2.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](https://github.com/py-pdf/pypdf/compare/5.1.0...6.4.2)

---
updated-dependencies:
- dependency-name: pypdf
  dependency-version: 6.4.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pyproject.toml

@@ -60,7 +60,7 @@ python = ">=3.10,<4.0"
 setuptools = "*"
 asyncio = ">=3.4.3,<5.0"
 toml = "*"
-pypdf = "5.1.0"
+pypdf = "6.4.2"
 loguru = "*"
 pydantic = "*"
 tenacity = "*"