update xsd for core cc

[phiedw]

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines
• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?

No

What kind of change does this PR introduce?

New xsd file for core cc crac

What is the current behavior?

The import fail for the most recent crac files because of a new format

What is the new behavior (if this is a feature change)? A new xsd file is used to import the crac files

Does this PR introduce a breaking change or deprecate an API?

• [ ] Yes
• [x] No