[x] I have run this code in development, and it appears to resolve the stated issue
[x] This PR includes tests, or tests are not required/relevant for this PR
[x] This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc.) or this PR has already received feedback and approval from Product or DX
resolves #320
Problem
To support setting the snapshot dbt_valid_to column to a date value instead of null. For dbt-core https://github.com/dbt-labs/dbt-core/pull/10780.
Solution
Use the setting of the new attribute "dbt_valid_to_current" instead of (or in addition to) null in various snapshot queries.
Checklist