>1 Person ID per Claim ID raises warning instead of error

[krishyfishy]

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Describe the bug - Required
https://github.com/tuva-health/tuva/blob/main/models/input_layer/input_layer__medical_claim.yml#L118
The severity level for this issue is 1 but its severity is set to warn instead of error

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Environment - Required

• Tuva project package version (e.g. 0.6.0):
• dbt version (e.g. 1.7):
• dbt type (e.g. dbt cloud or dbt CLI):
• Data warehouse (e.g. Snowflake):

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To Reproduce
Steps to reproduce the behavior:
run the tuva project on a claims source with at least 1 occurrence of >1 person ID per claim ID

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Expected behavior
This is expected to error and stop pipeline run.

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Screenshots
If applicable, add screenshots to help explain your problem.

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Additional context
This is probably a breaking change.