Update devDependencies.

package.json

@@ -12,14 +12,14 @@
   },
   "dependencies": {
     "bin-wrapper": "^4.1.0",
-    "pkg-conf": "^2.1.0",
+    "pkg-conf": "^3.1.0",
     "rimraf": "^2.6.3",
-    "signale": "^1.3.0"
+    "signale": "^1.4.0"
   },
   "devDependencies": {
     "bin-check": "^4.1.0",
-    "eslint": "^5.13.0",
-    "mocha": "^5.2.0"
+    "eslint": "^5.16.0",
+    "mocha": "^6.1.2"
   },
   "scripts": {
     "eslint": "eslint .",