build(deps): bump the pip group across 1 directory with 4 updates

Bumps the pip group with 4 updates in the / directory: [django](https://github.com/django/django), [mcp](https://github.com/modelcontextprotocol/python-sdk), [sentence-transformers](https://github.com/huggingface/sentence-transformers) and [pypdf](https://github.com/py-pdf/pypdf).


Updates `django` from 5.2.16 to 5.2.17
- [Commits](django/django@5.2.16...5.2.17)

Updates `mcp` from 1.28.1 to 1.30.0
- [Release notes](https://github.com/modelcontextprotocol/python-sdk/releases)
- [Changelog](https://github.com/modelcontextprotocol/python-sdk/blob/main/RELEASE.md)
- [Commits](modelcontextprotocol/python-sdk@v1.28.1...v1.30.0)

Updates `sentence-transformers` from 5.0.0 to 5.6.0
- [Release notes](https://github.com/huggingface/sentence-transformers/releases)
- [Commits](huggingface/sentence-transformers@v5.0.0...v5.6.0)

Updates `pypdf` from 6.18.0 to 6.19.0
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](py-pdf/pypdf@6.18.0...6.19.0)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 5.2.17
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: mcp
  dependency-version: 1.30.0
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: sentence-transformers
  dependency-version: 5.6.0
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: pypdf
  dependency-version: 6.19.0
  dependency-type: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

pyproject.toml

@@ -28,15 +28,15 @@ dependencies = [
     "langchain-deepseek==1.1.0",
     "langchain-google-genai==4.2.5",
     "langchain-mcp-adapters==0.3.0",
-    "mcp==1.28.1",
+    "mcp==1.30.0",
     "langchain-huggingface==1.2.2",
     "langchain-ollama==1.1.0",
     "langchain-aws==1.6.0",
     "langgraph==1.2.6",
     "deepagents==0.6.11",
     "torch==2.13.0",
     "numpy==1.26.4",
-    "sentence-transformers==5.0.0",
+    "sentence-transformers==5.6.0",
     "qianfan==0.4.12.3",
     "zai-sdk==0.2.3",
     "volcengine-python-sdk[ark]==5.0.24",