Bump grunt from 1.0.4 to 1.1.0 (#77)

Author: dependabot-preview[bot]

package-lock.json

@@ -41,7 +41,7 @@
     "eslint-plugin-import": "^2.20.1",
     "eslint-plugin-jest": "23.8.2",
     "eslint-plugin-prettier": "^3.1.1",
-    "grunt": "^1.0.4",
+    "grunt": "^1.1.0",
     "grunt-cli": "^1.3.2",
     "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-nodeunit": "^2.1.0",