Bump xmlschema from 2.0.1 to 2.1.1

Bumps [xmlschema](https://github.com/sissaschool/xmlschema) from 2.0.1 to 2.1.1.
- [Release notes](https://github.com/sissaschool/xmlschema/releases)
- [Changelog](https://github.com/sissaschool/xmlschema/blob/master/CHANGELOG.rst)
- [Commits](sissaschool/xmlschema@v2.0.1...v2.1.1)

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

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

pip-requirements.txt

@@ -14,5 +14,5 @@
 
 edk2-pytool-library~=0.11.6 # MU_CHANGE - update to 0.11.0 or later
 edk2-pytool-extensions~=0.17.2 # MU_CHANGE - update to 0.17.0 or later
-xmlschema==2.0.1 # MU_CHANGE - update to 2.0.1 or later
+xmlschema==2.1.1 # MU_CHANGE - update to 2.0.1 or later
 regex==2022.8.17