Log Message:
py-xmlschema: updated to 2.1.1

`v2.1.1`_ (2022-10-01)
======================
* Fix *schema_path* usage in `XMLSchemaBase.iter_errors()`
* Add *allow_empty* option to `XMLSchemaBase` validation API

`v2.1.0`_ (2022-09-25)
======================
* Add *to_etree()* to document API
* Improve generic encoding with wildcards
* Clean document API and schema decoding

`v2.0.4`_ (2022-09-08)
======================
* Add *use_location_hints* argument to document API for giving the option
  of ignoring XSI schema locations hints
* Fix import from locations hints with namespace mismatch

`v2.0.3`_ (2022-08-25)
======================
* Add *keep_empty* and *element_hook* options to main `iter_decode()` method
* Fix default namespace mapping in `BadgerFishConverter`
* Fix type restriction check if restricted particle has `maxOccurs==0`

`v2.0.2`_ (2022-08-12)
======================
* Fix XSD 1.1 assertions effective scope
* Add support for Python 3.11

`v2.0.1`_ (2022-07-21)
======================
* Remove warnings during the build of the package using package_data specs in \ 
setup.py
* Fix decoding with `process_namespaces=False` and xsi:type in XML instance
* Refactor `DataElement.get()`, restore `DataElement.set()`
* Add *map_attribute_names* argument to `DataElementConverter`

`v2.0.0`_ (2022-07-18)
======================
* Refactor XPath interface for the full XPath node implementation of elementpath v3.0
* Fix BadgerFishConverter with mixed content
* Improve `get()` and `set()` of DataElement