feat!: Upgrades DocumentDB version to 5.0.0

[marofke]

Summary

This change bumps our default DocumentDB version to 5.0.0.

Note that users with existing DocumentDB clusters with previous versions will need to manually upgrade by following the documentation: https://docs.aws.amazon.com/documentdb/latest/developerguide/docdb-mvu.html

Testing

• Deployed the All-In-AWS-Infrastructure-Basic typescript example to my account, using the latest release version, which created a DocDB 3.6 cluster
• Submitted a job, and confirmed it wrote to the DB successfully
• Followed the documentation to migrate my DocumentDB cluster to 5.0.0
• Confirmed I could submit and retrieve jobs to/from my DB (and my existing jobs showed up)
• Using these changes, redeployed to my existing RFDK stacks, confirmed it deployed correctly
• Confirmed I could submit and retrieve jobs to/from my DB (and my existing jobs showed up)

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license