update deps

package.json

@@ -35,13 +35,11 @@
     "asn1": "^0.2.3",
     "bluebird": "^3.0.6",
     "homedir": "^0.6.0",
-    "le-acme-core": "^2.0.1",
-    "mkdirp": "^0.5.1",
+    "le-acme-core": "^2.0.5",
+    "le-challenge-fs": "^2.0.2",
+    "le-store-certbot": "^2.0.1",
     "node.extend": "^1.1.5",
     "pkijs": "^1.3.27",
-    "pyconf": "^1.1.2",
-    "request": "^2.67.0",
-    "rsa-compat": "^1.2.1",
-    "safe-replace": "^1.0.2"
+    "rsa-compat": "^1.2.1"
   }
 }