Bump the pip group across 2 directories with 2 updates

Bumps the pip group with 2 updates in the /valueflows_node directory: [cryptography](https://github.com/pyca/cryptography) and [python-multipart](https://github.com/Kludex/python-multipart).
Bumps the pip group with 2 updates in the / directory: [cryptography](https://github.com/pyca/cryptography) and [python-multipart](https://github.com/Kludex/python-multipart).


Updates `cryptography` from 42.0.0 to 44.0.1
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@42.0.0...44.0.1)

Updates `python-multipart` from 0.0.6 to 0.0.18
- [Release notes](https://github.com/Kludex/python-multipart/releases)
- [Changelog](https://github.com/Kludex/python-multipart/blob/master/CHANGELOG.md)
- [Commits](Kludex/python-multipart@0.0.6...0.0.18)

Updates `cryptography` from 42.0.0 to 44.0.1
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@42.0.0...44.0.1)

Updates `python-multipart` from 0.0.6 to 0.0.18
- [Release notes](https://github.com/Kludex/python-multipart/releases)
- [Changelog](https://github.com/Kludex/python-multipart/blob/master/CHANGELOG.md)
- [Commits](Kludex/python-multipart@0.0.6...0.0.18)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-version: 44.0.1
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: python-multipart
  dependency-version: 0.0.18
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: cryptography
  dependency-version: 44.0.1
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: python-multipart
  dependency-version: 0.0.18
  dependency-type: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,10 +1,10 @@
 fastapi==0.115.6
 uvicorn==0.34.0
 pydantic==2.10.5
-cryptography==44.0.0
+cryptography==44.0.1
 pynacl==1.5.0
 aiosqlite==0.20.0
-python-multipart==0.0.20
+python-multipart==0.0.18
 bcrypt==4.1.2
 
 # Agent system dependencies

valueflows_node/requirements.txt

@@ -9,10 +9,10 @@ pydantic==2.5.0
 # SQLite is built into Python, no external dependency needed
 
 # Cryptography (for Ed25519 signing)
-cryptography==42.0.0
+cryptography==44.0.1
 
 # Utilities
-python-multipart==0.0.6  # For form data
+python-multipart==0.0.18  # For form data
 python-jose[cryptography]==3.3.0  # JWT tokens (optional)
 
 # Development