Updated several packages

package.json

@@ -60,7 +60,7 @@
     "istanbul": "^0.4.5",
     "js-beautify": "^1.5.10",
     "json5": "^1.0.1",
-    "less": "^3.0.4",
+    "less": "^3.9.0",
     "less-loader": "^4.1.0",
     "lodash": "^4.17.10",
     "mini-css-extract-plugin": "^0.4.1",
@@ -79,7 +79,7 @@
     "stylelint": "^9.2.1",
     "stylelint-declaration-use-variable": "^1.6.1",
     "stylelint-order": "^0.8.1",
-    "ts-loader": "^4.4.1",
+    "ts-loader": "^4.5.0",
     "tslint": "^5.10.0",
     "typescript": "^2.9.2",
     "uglify-es": "^3.3.9",
@@ -89,7 +89,7 @@
     "webpack": "^4.12.0",
     "webpack-cli": "^3.0.4",
     "webpack-dev-middleware": "^3.1.3",
-    "webpack-dev-server": "^3.1.4",
+    "webpack-dev-server": "^3.2.1",
     "worker-loader": "^2.0.0"
   },
   "engines": {