Bump pypdf from 3.5.2 to 3.8.0

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 3.5.2 to 3.8.0.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](py-pdf/pypdf@3.5.2...3.8.0)

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

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

requirements.txt

@@ -108,7 +108,7 @@ pyparsing==3.0.9
     # via
     #   httplib2
     #   matplotlib
-pypdf==3.5.2
+pypdf==3.8.0
     # via xhtml2pdf
 pypng==0.20220715.0
     # via qrcode