fix: receipt audience

Author: alanshaw

ucan/receipt/options.go

@@ -5,7 +5,6 @@ import "github.com/alanshaw/ucantone/ucan/invocation"
 type Option = invocation.Option
 
 var (
-	WithAudience     = invocation.WithAudience
 	WithExpiration   = invocation.WithExpiration
 	WithNoExpiration = invocation.WithNoExpiration
 	WithNonce        = invocation.WithNonce

ucan/receipt/receipt.go

@@ -123,6 +123,8 @@ func Issue[O, X ipld.Any](
 		return nil, err
 	}
 
+	options = append(options, invocation.WithAudience(executor))
+
 	inv, err := invocation.Invoke(executor, executor.DID(), Command, &args, options...)
 	if err != nil {
 		return nil, err