resolve ioutil deprecations

cmd/dkl-local-server/ws-configs.go

@@ -3,7 +3,6 @@ package main
 import (
 	"compress/gzip"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -25,7 +24,7 @@ func wsUploadConfig(req *restful.Request, resp *restful.Response) {
 }
 
 func writeNewConfig(reader io.Reader) (err error) {
-	out, err := ioutil.TempFile(*dataDir, ".config-upload")
+	out, err := os.CreateTemp(*dataDir, ".config-upload")
 	if err != nil {
 		return
 	}