Update dependency webpack-dev-server to v5 (#46)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

vue-2-webpack/package.json

@@ -20,7 +20,7 @@
     "vue-template-compiler": "2.7.14",
     "webpack": "5.88.2",
     "webpack-cli": "5.1.4",
-    "webpack-dev-server": "4.15.1"
+    "webpack-dev-server": "5.0.4"
   },
   "browserslist": [
     "last 1 Chrome versions"