replace cloudflare-bpc with utls (#58)

* replace cloudflare-bpc with utls

* fix test

* ci: skip utls test

pkg/monitor/myip.go

@@ -11,8 +11,6 @@ import (
 	"github.com/nezhahq/agent/pkg/util"
 )
 
-const MacOSChromeUA = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36"
-
 var (
 	cfList = []string{
 		"https://blog.cloudflare.com/cdn-cgi/trace",
@@ -116,6 +114,6 @@ func httpGetWithUA(client *http.Client, url string) (*http.Response, error) {
 	if err != nil {
 		return nil, err
 	}
-	req.Header.Add("User-Agent", MacOSChromeUA)
+	req.Header.Add("User-Agent", util.MacOSChromeUA)
 	return client.Do(req)
 }