Bump python-multipart in the pip group across 1 directory (#1577)

Bumps the pip group with 1 update in the / directory: [python-multipart](https://github.com/Kludex/python-multipart).


Updates `python-multipart` from 0.0.17 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@0.0.17...0.0.18)

---
updated-dependencies:
- dependency-name: python-multipart
  dependency-type: indirect
  dependency-group: pip
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>