chore: update dev dependencies

Author: rogeriopvl

package.json

@@ -41,12 +41,12 @@
     "resolve": "^1.3.3"
   },
   "devDependencies": {
-    "grunt": "^0.4.1",
-    "grunt-bump": "^0.3.1",
-    "grunt-conventional-changelog": "^1.2.2",
+    "grunt": "^1.0.3",
+    "grunt-bump": "^0.8.0",
+    "grunt-conventional-changelog": "^6.1.0",
     "grunt-npm": "0.0.2",
-    "load-grunt-tasks": "^3.2.0",
-    "standard": "^10.0.2"
+    "load-grunt-tasks": "^4.0.0",
+    "standard": "^12.0.0"
   },
   "preferGlobal": true,
   "bin": {