Bump marshmallow from 3.21.2 to 3.21.3

Bumps [marshmallow](https://github.com/marshmallow-code/marshmallow) from 3.21.2 to 3.21.3.
- [Changelog](https://github.com/marshmallow-code/marshmallow/blob/dev/CHANGELOG.rst)
- [Commits](marshmallow-code/marshmallow@3.21.2...3.21.3)

---
updated-dependencies:
- dependency-name: marshmallow
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pyproject.toml

@@ -50,7 +50,7 @@ tests = [
   "coverage==7.5.3",
   "werkzeug==3.0.3",
   "flask==3.0.3",
-  "marshmallow==3.21.2",
+  "marshmallow==3.21.3",
   "webargs==8.4.0",
   "apispec==6.6.1",
   "PyYAML==6.0.1",