Change to use decimal for amount column

Signed-off-by: popcorny <[email protected]>

Author: popcornylu

models/staging/stg_payments.sql

@@ -16,7 +16,7 @@ renamed as (
         payment_method,
 
         -- `amount` is currently stored in cents, so we convert it to dollars
-        amount / 100 as amount
+        (amount / 100)::DECIMAL(10,2) amount
 
     from source