Bump pypdf2

Bumps [pypdf2](https://github.com/py-pdf/PyPDF2) from 1.26.0 to 1.27.9.
- [Release notes](https://github.com/py-pdf/PyPDF2/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/1.27.9/CHANGELOG)
- [Commits](py-pdf/pypdf@1.26.0...1.27.9)

---
updated-dependencies:
- dependency-name: pypdf2
  dependency-type: direct:development
...

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

Packs/AzureKubernetesServices/Integrations/AzureKubernetesServices/Pipfile

@@ -28,7 +28,7 @@ sendgrid = "==6.6.0"
 blessings = "==1.7"
 slack-sdk = "==3.11.2"
 GitPython = "==3.1.11"
-PyPDF2 = "==1.26.0"
+PyPDF2 = "==1.27.9"
 
 [packages]
 cryptography = "*"