Merge pull request #277 from duckdb/bump-md-version

Bump MotherDuck's version requirement

README.md

@@ -51,8 +51,8 @@ or the Python API.
 
 MotherDuck databases generally work the same way as local DuckDB databases from the perspective of dbt, but
 there are a [few differences to be aware of](https://motherduck.com/docs/architecture-and-capabilities#considerations-and-limitations):
-1. For the moment, MotherDuck _requires_ DuckDB version `0.8.1`.
-1. MotherDuck databases do not suppport transactions, so there is a new `disable_transactions` profile
+1. For the moment, MotherDuck _requires_ DuckDB version `0.9.1`.
+1. MotherDuck databases do not suppport transactions, so there is a new `disable_transactions` profile.
 option that will be automatically enabled if you are connecting to a MotherDuck database in your `path`.
 1. MotherDuck preloads a set of the most common DuckDB extensions for you, but does not support loading custom extensions or user-defined functions.
 1. A small subset of advanced SQL features are currently unsupported; the only impact of this on the dbt adapter is that the [dbt.listagg](https://docs.getdbt.com/reference/dbt-jinja-functions/cross-database-macros#listagg) macro and foreign-key constraints will work against a local DuckDB database, but will not work against a MotherDuck database.