Add new data source type var

[sarah-tuva]

Describe your changes

Add claims_enabled var to dbt_project.yml to trigger Tuva Project claims marts to run following changes in the latest release of The Tuva Project package.

How has this been tested?

Ran dbt deps && dbt build in Snowflake, BigQuery, and Redshift.

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Please summarize the specific items you’d like the reviewer(s) to look into.

Checklist before requesting a review

• [ ] (Optional) I have recorded a Loom performing a self-review of my code
• [ ] My code follows style guidelines
• [ ] I have commented my code as necessary
• [ ] (New models only) I have implemented generic dbt tests to validate primary keys/uniqueness in my model
• [ ] I have added at least one Github label to this PR

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[thutuva]

Review complete but GitHub is giving me a 404 when I submit my Approval. By passing that step and merging.