Update README.md

Author: benitav

packages/kysely-driver/README.md

@@ -8,9 +8,9 @@
 
 This package (`packages/kysely-driver`) brings the benefits of an ORM through our maintained [Kysely](https://kysely.dev/) driver to PowerSync.
 
-## Alpha Release
+## Beta Release
 
-The `kysely-driver` package is currently in an alpha release. 
+The `kysely-driver` package is currently in a beta release. 
 
 ## Getting started