提升依赖等级

@@ -61,7 +61,7 @@
   },
   "dependencies": {
     "axios": "^0.19.2",
-    "date-fns": "^1.30.1",
+    "date-fns": "^2.9.0",
     "element-ui": "^2.13.0",
     "js-cookie": "^2.2.1",
     "nedb": "^1.8.0",
@@ -90,7 +90,7 @@
     "chalk": "^3.0.0",
     "clean-webpack-plugin": "^3.0.0",
     "copy-webpack-plugin": "^5.1.1",
-    "cross-env": "^6.0.3",
+    "cross-env": "^7.0.0",
     "css-loader": "^3.4.2",
     "del": "^5.1.0",
     "devtron": "^1.4.0",
@@ -136,7 +136,7 @@
     "vue-template-compiler": "^2.6.11",
     "webpack": "^4.41.5",
     "webpack-cli": "^3.3.10",
-    "webpack-dev-server": "^3.10.1",
+    "webpack-dev-server": "^3.10.3",
     "webpack-hot-middleware": "^2.25.0",
     "webpack-merge": "^4.2.2"
   }