chore(deps): update dependency python-multipart to v0.0.31 [security] (#183)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

backend/requirements.txt

@@ -36,7 +36,7 @@ pygments==2.20.0
 pyjwt==2.13.0
 python-dateutil==2.9.0.post0
 python-dotenv==1.2.2
-python-multipart==0.0.30
+python-multipart==0.0.31
 pyyaml==6.0.3
 rich==14.3.4
 shellingham==1.5.4