fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/npm:open:20180512

package-lock.json

@@ -542,30 +542,6 @@
       "resolved": "https://registry.npmjs.org/docopt/-/docopt-0.6.2.tgz",
       "integrity": "sha1-so6eIiDaXsSffqW7JKR3h0Be6xE="
     },
-    "doctrine": {
-      "version": "0.7.2",
-      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-0.7.2.tgz",
-      "integrity": "sha1-fLhgNZujvpDgQLJrcpzkv6ZUxSM=",
-      "dev": true,
-      "requires": {
-        "esutils": "1.1.6",
-        "isarray": "0.0.1"
-      },
-      "dependencies": {
-        "esutils": {
-          "version": "1.1.6",
-          "resolved": "https://registry.npmjs.org/esutils/-/esutils-1.1.6.tgz",
-          "integrity": "sha1-wBzKqa5LiXxtDD4hCuUvPHqEQ3U=",
-          "dev": true
-        },
-        "isarray": {
-          "version": "0.0.1",
-          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
-          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
-          "dev": true
-        }
-      }
-    },
     "dont-sniff-mimetype": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/dont-sniff-mimetype/-/dont-sniff-mimetype-1.0.0.tgz",
@@ -938,6 +914,11 @@
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.4.0.tgz",
       "integrity": "sha1-KWrKh4qCGBbluF0KKFqZvP9FgvA="
     },
+    "is-wsl": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-1.1.0.tgz",
+      "integrity": "sha1-HxbkqiKwTRM2tmGIpmrzxgDDpm0="
+    },
     "isarray": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
@@ -1163,9 +1144,12 @@
       }
     },
     "open": {
-      "version": "0.0.5",
-      "resolved": "https://registry.npmjs.org/open/-/open-0.0.5.tgz",
-      "integrity": "sha1-QsPhjslUZra/DcQvOilFw/DK2Pw="
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/open/-/open-6.0.0.tgz",
+      "integrity": "sha512-/yb5mVZBz7mHLySMiSj2DcLtMBbFPJk5JBKEkHVZFxZAPzeg3L026O0T+lbdz1B2nyDnkClRSwRQJdeVUIF7zw==",
+      "requires": {
+        "is-wsl": "^1.1.0"
+      }
     },
     "parseurl": {
       "version": "1.3.2",
@@ -1529,32 +1513,6 @@
         "tsutils": "2.22.2"
       }
     },
-    "tslint-config-dabapps": {
-      "version": "github:dabapps/tslint-config-dabapps#e73b8141b5675ae6c04aaea77ae9eda8a9db28dd",
-      "dev": true,
-      "requires": {
-        "tslint-eslint-rules": "4.0.0"
-      }
-    },
-    "tslint-eslint-rules": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/tslint-eslint-rules/-/tslint-eslint-rules-4.0.0.tgz",
-      "integrity": "sha1-Tg5Z7NVwHJpIxm7Ue9yvscY10ns=",
-      "dev": true,
-      "requires": {
-        "doctrine": "0.7.2",
-        "tslib": "1.9.0",
-        "tsutils": "1.9.1"
-      },
-      "dependencies": {
-        "tsutils": {
-          "version": "1.9.1",
-          "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-1.9.1.tgz",
-          "integrity": "sha1-ufmrROVa+WgYMdXyjQrur1x1DLA=",
-          "dev": true
-        }
-      }
-    },
     "tsutils": {
       "version": "2.22.2",
       "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-2.22.2.tgz",

package.json

@@ -35,7 +35,7 @@
     "express-ip-access-control": "1.0.5",
     "helmet": "3.12.0",
     "morgan": "1.9.0",
-    "open": "0.0.5",
+    "open": "6.0.0",
     "serve-index": "1.9.1"
   },
   "devDependencies": {