Bump multidict from 6.2.0 to 6.3.2 (#1492)

Bump multidict from 6.2.0 to 6.3.1

Bumps [multidict](https://github.com/aio-libs/multidict) from 6.2.0 to 6.3.1.
- [Release notes](https://github.com/aio-libs/multidict/releases)
- [Changelog](https://github.com/aio-libs/multidict/blob/master/CHANGES.rst)
- [Commits](aio-libs/multidict@v6.2.0...v6.3.1)

---
updated-dependencies:
- dependency-name: multidict
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/test.txt

@@ -2,7 +2,7 @@
 covdefaults
 hypothesis>=6.0
 idna==3.10
-multidict==6.2.0
+multidict==6.3.2
 propcache==0.3.1
 pytest==8.3.5
 pytest-cov>=2.3.1