Change event revenue attributes to type: numeric

[mhimi1]

event_revenue and event_revenue_usd are of type string. This causes issues in BigQuery when doing sums. Changed to numeric

Description of change

event_revenue and event_revenue_usd are of type string. This causes issues in BigQuery when doing sums. Changed to numeric

Manual QA steps

Risks

• Unsure whether this would break non BigQuery integrations?

Rollback steps

• revert this branch

[gaberogan]

With this I get:

singer.transform.SchemaMismatch: Errors during transform
	event_revenue: 2.99 does not match {'type': ['numeric', 'null']}

It seems that 2.99 is somehow a string and Singer doesn't like transforming it to a number. I'm not very familiar with how this process should work but it seems this PR needs to handle this better.