Bump pypdf

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 5.4.0 to 6.0.0.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](py-pdf/pypdf@5.4.0...6.0.0)

---
updated-dependencies:
- dependency-name: pypdf
  dependency-version: 6.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

cloud-infrastructure/ai-infra-gpu/ai-infrastructure/rag-langchain-vllm-mistral/files/requirements.txt

@@ -170,7 +170,7 @@ pydantic-settings==2.8.1
 pydantic_core==2.33.1
 pyee==12.1.1
 Pygments @ file:///croot/pygments_1684279966437/work
-pypdf==5.4.0
+pypdf==6.0.0
 PySocks==1.7.1
 python-dateutil==2.9.0.post0
 python-dotenv==1.1.0