pip: bump xmlschema from 2.3.1 to 2.4.0 (#656)

Bumps [xmlschema](https://github.com/sissaschool/xmlschema) from 2.3.1
to 2.4.0.

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

pip-requirements.txt

@@ -14,5 +14,5 @@
 
 edk2-pytool-library==0.15.3
 edk2-pytool-extensions==0.23.9
-xmlschema==2.3.1
+xmlschema==2.4.0
 regex==2023.6.3