Bump multipart from 1.3.0 to 1.3.1

Bumps [multipart](https://github.com/defnull/multipart) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/defnull/multipart/releases)
- [Changelog](https://github.com/defnull/multipart/blob/main/CHANGELOG.rst)
- [Commits](defnull/multipart@v1.3.0...v1.3.1)

---
updated-dependencies:
- dependency-name: multipart
  dependency-version: 1.3.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-3.13.txt

@@ -29,7 +29,7 @@ Jinja2==3.1.6
 Mako==1.3.10
 MarkupSafe==3.0.3
 msgpack==1.1.2
-multipart==1.3.0
+multipart==1.3.1
 packaging==26.0
 psycopg2==2.9.11
 py-ubjson==0.16.1