Update dependency webpack to v5

Author: renovate[bot]

Diff for: package.json

@@ -38,7 +38,7 @@
     "vue": "2.6.14",
     "vue-loader": "15.9.8",
     "vue-template-compiler": "2.6.14",
-    "webpack": "4.46.0",
+    "webpack": "5.76.3",
     "webpack-cli": "3.3.12",
     "webpack-dev-server": "3.11.3"
   }