Update dependencies

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hierarchy-select",
-  "version": "2.0.1",
+  "version": "2.1.0",
   "description": "Hierarchy Select jQuery Plugin for Twitter Bootstrap 4",
   "author": {
     "name": "Evgeniy NeoFusion",
@@ -45,15 +45,15 @@
     "jquery": "1.9.1 - 3"
   },
   "devDependencies": {
-    "concurrently": "^3.6.0",
-    "grunt": "^1.0.3",
-    "grunt-contrib-clean": "^1.1.0",
+    "concurrently": "^5.2.0",
+    "grunt": "^1.1.0",
+    "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-uglify": "^3.3.0",
-    "grunt-sass": "^2.1.0",
-    "http-server": "^0.11.1",
-    "jasmine-core": "^3.1.0",
-    "jasmine-spec-reporter": "^4.2.1",
-    "protractor": "^5.3.2"
+    "grunt-contrib-uglify": "^4.0.1",
+    "grunt-sass": "^3.1.0",
+    "http-server": "^0.12.1",
+    "jasmine-core": "^3.5.0",
+    "jasmine-spec-reporter": "^5.0.2",
+    "protractor": "^5.4.4"
   }
 }