Upgrade le utils for QTI preset.

[rtibbles]

Summary

Description of the change(s) you made

Upgrades le-utils for the latest version and adds migrations

Diff: learningequality/le-utils@v0.1.29...v0.1.30

Contributor's Checklist

PR process:

• If this includes an internal dependency change, a link to the diff is provided
• If any Python requirements have changed, the updated requirements.txt files also included in this PR
• Migrations are safe for a large db

Testing:

• Code is clean and well-commented
• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Any new interactions have been added to the QA Sheet
• Critical and brittle code paths are covered by unit tests

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Reviewer's Checklist

This section is for reviewers to fill out.

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md