Bump pypdf2 from 1.28.2 to 2.11.1

Bumps [pypdf2](https://github.com/py-pdf/PyPDF2) from 1.28.2 to 2.11.1.
- [Release notes](https://github.com/py-pdf/PyPDF2/releases)
- [Changelog](https://github.com/py-pdf/PyPDF2/blob/2.11.1/CHANGELOG.md)
- [Commits](py-pdf/pypdf@1.28.2...2.11.1)

---
updated-dependencies:
- dependency-name: pypdf2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements.txt

@@ -11,7 +11,7 @@ pdfminer.six==20220524
 python-dotenv==0.20.0
 python-telegram-bot==13.12
 Pillow==9.1.1
-PyPDF2==1.28.2
+PyPDF2==2.11.1
 requests==2.28.1
 slackclient==2.9.4
 textblob==0.17.1