v2.7.2: use correct deps

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "greenlock-express",
-  "version": "2.7.0",
+  "version": "2.7.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -240,20 +240,27 @@
       "dev": true
     },
     "greenlock": {
-      "version": "2.7.4",
-      "resolved": "https://registry.npmjs.org/greenlock/-/greenlock-2.7.4.tgz",
-      "integrity": "sha512-IIuLtBn1DcY1U4HFqhga24B7f0A7SG/coIiVxIlC2pcGLYoEPByrFAIdT0QEOH/sKPKQ+5vDW0qZnNaED5doEQ==",
+      "version": "2.7.5",
+      "resolved": "https://registry.npmjs.org/greenlock/-/greenlock-2.7.5.tgz",
+      "integrity": "sha512-25Te+Lem+7zBdpvbvBcdqLULuMIc1pkXgInkhPEAzJ4n4XIazv6Wg/gvJXo6ZCnOgjRpDuuOYOHhaf/bYworWg==",
       "requires": {
         "acme": "^1.3.0",
         "acme-v2": "^1.7.4",
         "cert-info": "^1.5.1",
         "keypairs": "^1.2.14",
-        "le-challenge-dns": "^2.3.2",
+        "le-challenge-dns": "^3.0.1",
         "le-challenge-fs": "^2.0.2",
         "le-sni-auto": "^2.1.8",
         "le-store-certbot": "^2.2.1",
         "le-store-fs": "^1.0.0",
         "rsa-compat": "^2.0.6"
+      },
+      "dependencies": {
+        "le-challenge-dns": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/le-challenge-dns/-/le-challenge-dns-3.0.1.tgz",
+          "integrity": "sha512-bYuf/A3gQoRyKoJ/YAmmW8BysSdjutzCKo9r/gx/Vp9Usw7ldIHzjq/sQusBYJZwcMItKkc0/Uy0AWk/B6YfIg=="
+        }
       }
     },
     "http-errors": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "greenlock-express",
-  "version": "2.7.1",
+  "version": "2.7.2",
   "description": "Free SSL and managed or automatic HTTPS for node.js with Express, Koa, Connect, Hapi, and all other middleware systems.",
   "main": "index.js",
   "homepage": "https://git.coolaj86.com/coolaj86/greenlock-express.js",
@@ -8,7 +8,7 @@
     "example": "examples"
   },
   "dependencies": {
-    "greenlock": "^2.7.4",
+    "greenlock": "^2.7.5",
     "le-challenge-dns": "^2.3.2",
     "le-challenge-fs": "^2.0.8",
     "le-sni-auto": "^2.1.8",