Update spoor extension to work with jest testing

[joe-allen-89]

Subject of the issue/enhancement/features

• Using import the dependency at the top of the file instead of require
• Return early in spoor's wrapper.js if Adapt.course does not exist

https://github.com/adaptlearning/adapt_framework/pull/3383

[github-actions[bot]]

:tada: This issue has been resolved in version 5.7.1 :tada:

The release is available on GitHub release

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