Try to fix ACME directory problem (go-gitea#33072) (go-gitea#33077)

Backport go-gitea#33072 by wxiaoguang Haven't really confirmed, but I think it might fix go-gitea#32191 Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

Author: GiteaBot

cmd/web_acme.go

@@ -54,7 +54,7 @@ func runACME(listenAddr string, m http.Handler) error {
 altTLSALPNPort = p
 }
 
-magic := certmagic.NewDefault()
+magic := &certmagic.Default
 magic.Storage = &certmagic.FileStorage{Path: setting.AcmeLiveDirectory}
 // Try to use private CA root if provided, otherwise defaults to system's trust
 var certPool *x509.CertPool