chore: release 2.8.1 [skip ci]

Author: aws-amplify-ops

AmplifyPlugins/Core/AWSPluginsCore/ServiceConfiguration/AmplifyAWSServiceConfiguration.swift

@@ -10,7 +10,7 @@ import AWSClientRuntime
 
 public class AmplifyAWSServiceConfiguration {
 
-    public static let amplifyVersion = "2.8.0"
+    public static let amplifyVersion = "2.8.1"
     public static let platformName = "amplify-swift"
 
     public static func frameworkMetaData() -> FrameworkMetadata {