Bump pikepdf from 2.16.1 to 5.0.1 (#143)

Bumps [pikepdf](https://github.com/pikepdf/pikepdf) from 2.16.1 to 5.0.1.
- [Release notes](https://github.com/pikepdf/pikepdf/releases)
- [Changelog](https://github.com/pikepdf/pikepdf/blob/master/docs/release_notes.rst)
- [Commits](https://github.com/pikepdf/pikepdf/compare/v2.16.1...v5.0.1)

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

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

Pipfile

@@ -24,7 +24,7 @@ langdetect = "*"
 numpy = "~=1.20.0"
 pathvalidate = "*"
 pillow = "~=8.1"
-pikepdf = "~=2.5"
+pikepdf = "~=5.0"
 python-gnupg = "*"
 python-dotenv = "*"
 python-dateutil = "*"