Upgrade frontend dependencies

package.json

@@ -5,21 +5,21 @@
   "main": "",
   "dependencies": {},
   "devDependencies": {
-    "@babel/core": "^7.12.3",
-    "@babel/plugin-transform-runtime": "^7.12.1",
-    "@babel/preset-env": "^7.12.1",
-    "@babel/register": "^7.12.1",
+    "@babel/core": "^7.12.10",
+    "@babel/plugin-transform-runtime": "^7.12.10",
+    "@babel/preset-env": "^7.12.11",
+    "@babel/register": "^7.12.10",
     "@babel/runtime": "^7.12.5",
     "babel-eslint": "^10.1.0",
-    "babel-loader": "^8.1.0",
+    "babel-loader": "^8.2.2",
     "buffer": "^5.7.1",
     "clean-webpack-plugin": "^3.0.0",
-    "copy-webpack-plugin": "^6.3.0",
+    "copy-webpack-plugin": "^6.4.1",
     "css-loader": "^4.3.0",
-    "eslint": "^7.13.0",
+    "eslint": "^7.16.0",
     "eslint-config-prettier": "^6.15.0",
     "eslint-loader": "^4.0.2",
-    "eslint-plugin-prettier": "^3.1.4",
+    "eslint-plugin-prettier": "^3.3.0",
     "eslint-plugin-vue": "^6.2.2",
     "favicons-webpack-plugin": "^4.2.0",
     "file-loader": "^6.2.0",
@@ -33,12 +33,12 @@
     "mocha": "^8.2.1",
     "normalize.css": "^8.0.1",
     "optimize-css-assets-webpack-plugin": "^5.0.4",
-    "prettier": "^2.1.2",
+    "prettier": "^2.2.1",
     "roboto-fontface": "^0.10.0",
     "style-loader": "^1.3.0",
     "terser-webpack-plugin": "^4.2.3",
     "vue": "^2.6.12",
-    "vue-loader": "^15.9.5",
+    "vue-loader": "^15.9.6",
     "vue-template-compiler": "^2.6.12",
     "webpack": "^4.44.2",
     "webpack-cli": "^3.3.12",