CLEANUP/MINOR: gofumpt formatting [v2.9]

Run make gofumpt to keep formatting in sync.

Author: mjuraga

client-native/cn.go

@@ -28,7 +28,8 @@ var (
 )
 
 func ConfigureConfigurationClient(haproxyOptions dataplaneapi_config.HAProxyConfiguration, mWorker bool) (configuration.Configuration, error) {
-	confClient, err := configuration.New(context.Background(),
+	confClient, err := configuration.New(
+		context.Background(),
 		configuration_options.ConfigurationFile(haproxyOptions.ConfigFile),
 		configuration_options.HAProxyBin(haproxyOptions.HAProxy),
 		configuration_options.Backups(haproxyOptions.BackupsNumber),

configure_data_plane.go

@@ -829,7 +829,8 @@ func configureAPI(api *operations.DataPlaneAPI) http.Handler { //nolint:cyclop,m
 
 	// middlewares
 	var adpts []adapters.Adapter
-	adpts = append(adpts,
+	adpts = append(
+		adpts,
 		cors.New(cors.Options{
 			AllowedOrigins: []string{"*"},
 			AllowedMethods: []string{