Adopt ConfigKit for pipeline loading

internal/config/validate_publish.go

@@ -60,12 +60,7 @@ func validatePublish(cfg *PublishConfig, scriptorium *ScriptoriumConfig, notariu
 		}
 		dest := strings.TrimSpace(item.Dest)
 		if dest == "" {
-			derivedDest, err := artifactpolicy.ResolvePublishedDestinationWithExtractions(source, "", configuredOutputs, extractionOutputs)
-			if err != nil {
-				return fmt.Errorf("%s.dest is required when destination cannot be derived from %q: %w", prefix, source, err)
-			}
-			dest = derivedDest
-			cfg.Outputs[i].Dest = derivedDest
+			return fmt.Errorf("%s.dest is required when destination cannot be derived from %q", prefix, source)
 		}
 		normalizedDest, err := pathsafe.NormalizeRelativeDestination(dest)
 		if err != nil {