Bump marshmallow from 3.21.2 to 3.21.3 (#342)

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

requirements.txt

@@ -20,7 +20,7 @@ et-xmlfile==1.1.0
     # via openpyxl
 lxml==5.2.2
     # via python-docx
-marshmallow==3.21.2
+marshmallow==3.21.3
     # via maus
 maus==0.5.0
     # via kohlrahbi (pyproject.toml)