add exec shell after installing dbt fusion

Author: haritamar

.github/workflows/test-warehouse.yml

@@ -122,7 +122,9 @@ jobs:
 
       - name: Install dbt-fusion
         if: inputs.use-dbt-fusion
-        run: curl -fsSL https://public.cdn.getdbt.com/fs/install/install.sh | sh -s -- --update
+        run: |
+          curl -fsSL https://public.cdn.getdbt.com/fs/install/install.sh | sh -s -- --update
+          exec $SHELL
 
       - name: Install Elementary
         run: pip install "./elementary[${{ (inputs.warehouse-type == 'databricks_catalog' && 'databricks') || inputs.warehouse-type }}]"