Meltano

<https://github.com/meltano/sdk/pull/3355|#3355 refactor: Make the deprecation warning in `singer_sdk.sinks.sql` more specific>
Pull request opened by <https://github.com/edgarrmondragon|edgarrmondragon>
## Summary by Sourcery

Enhancements:

• Update deprecation warning in singer_sdk.sinks.sql to reference the deprecated SQL sink class and recommend its replacement
<https://github.com/meltano/sdk|meltano/sdk>

<https://github.com/meltano/sdk/pull/3355|#3355 refactor: Make the deprecation warning in `singer_sdk.sinks.sql` more specific>
Pull request merged by <https://github.com/edgarrmondragon|edgarrmondragon>
<https://github.com/meltano/sdk|meltano/sdk>