Bump webpack-dev-server from 3.11.2 to 3.11.3 (#4498)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -385,7 +385,7 @@
     "url-loader": "^4.1.1",
     "webpack": "^4.46.0",
     "webpack-cli": "^3.3.12",
-    "webpack-dev-server": "^3.11.2",
+    "webpack-dev-server": "^3.11.3",
     "webpack-node-externals": "^1.7.2",
     "xterm": "^4.14.1",
     "xterm-addon-fit": "^0.5.0"