[synapse] Update swagger to ba2d430 (Azure#19912)

- Azure/azure-rest-api-specs@ba2d430

Author: chamons

sdk/synapse/Azure.Analytics.Synapse.AccessControl/src/autorest.md

@@ -8,7 +8,7 @@ Run `dotnet build /t:GenerateCode` to generate code.
 ``` yaml
 tag: package-access-control-2020-08-01-preview
 require:
-    - https://github.com/Azure/azure-rest-api-specs/blob/aa19725fe79aea2a9dc580f3c66f77f89cc34563/specification/synapse/data-plane/readme.md
+    - https://github.com/Azure/azure-rest-api-specs/blob/ba2d430b967bc6299fbedb8dc16ff039e08e1388/specification/synapse/data-plane/readme.md
 namespace: Azure.Analytics.Synapse.AccessControl
 public-clients: true
 credential-types: TokenCredential

sdk/synapse/Azure.Analytics.Synapse.Artifacts/CHANGELOG.md

@@ -1,6 +1,9 @@
 # Release History
 
-## 1.0.0-preview.8 (Unreleased)
+## 1.0.0-preview.8 (2021-04-06)
+
+### Added
+- Many additional model classes
 
 ### Changed
 - Exposed Serialization and Deserialization methods.