Allow credential templates to return entire credential requests.

[dlongley]

This PR also includes test dependencies that include updated VC-2.0 modules. We don't plan on merging this to main until those modules (with those features) are released.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 83.02239% with 91 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@b93dad3). Learn more about missing BASE report.

Additional details and impacted files

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