Drop support of webpack-dev-server ^4.8, add support for webpack-dev-server ^5.0

Author: Kocal

CHANGELOG.md

@@ -12,6 +12,7 @@ This is a new major version that contains several backwards-compatibility breaks
 
 * #1309 Drop ESLint integration (@Kocal) 
 
+* #1318 Drop webpack-dev-server 4 support, only webpack-dev-server 5 is supported (@Kocal)
 ## 4.7.0
 
 ### Features

package.json

@@ -43,7 +43,7 @@
     "tapable": "^2.2.1",
     "terser-webpack-plugin": "^5.3.0",
     "tmp": "^0.2.1",
-    "webpack-dev-server": "^4.8.0",
+    "webpack-dev-server": "^5.0.4",
     "yargs-parser": "^21.0.0"
   },
   "devDependencies": {