Bump xmlschema from 1.11.2 to 1.11.3

Bumps [xmlschema](https://github.com/sissaschool/xmlschema) from 1.11.2 to 1.11.3.
- [Release notes](https://github.com/sissaschool/xmlschema/releases)
- [Changelog](https://github.com/sissaschool/xmlschema/blob/master/CHANGELOG.rst)
- [Commits](sissaschool/xmlschema@v1.11.2...v1.11.3)

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

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

requirements.txt

@@ -1,7 +1,7 @@
 matplotlib >= 3.4.2
 pandas >= 1.1.5
 polars[pyarrow] >= 0.13.55
-xmlschema == 1.11.2
+xmlschema == 1.11.3
 Sphinx >= 3.3.1
 sphinx-autodoc-typehints >= 1.11.1
 ipython >= 7.30.1