update greenlock dep

package.json

@@ -10,7 +10,7 @@
     "le-challenge-fs": "^2.0.4",
     "le-sni-auto": "^2.0.1",
     "le-store-certbot": "^2.0.3",
-    "greenlock": "^2.1.9",
+    "greenlock": "^2.2.3",
     "localhost.daplie.me-certificates": "^1.2.3",
     "redirect-https": "^1.1.0"
   },