release 0.20.0 (#869)

Co-authored-by: GitHub Actions <noreply@github.com>

Author: github-actions[bot]

README.md

@@ -165,7 +165,7 @@ Learn more in our [AI data validations documentation](https://docs.elementary-da
 ```
 packages:
   - package: elementary-data/elementary
-    version: 0.19.4
+    version: 0.20.0
     ## Docs: <https://docs.elementary-data.com>
 
 ```

dbt_project.yml

@@ -1,5 +1,5 @@
 name: "elementary"
-version: "0.19.4"
+version: "0.20.0"
 
 require-dbt-version: [">=1.0.0", "<2.0.0"]