Bump webpack from 5.3.2 to 5.4.0

Bumps [webpack](https://github.com/webpack/webpack) from 5.3.2 to 5.4.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.3.2...v5.4.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -61,7 +61,7 @@
     "ts-loader": "^8.0.7",
     "typescript": "4.0",
     "utf8": "^3.0.0",
-    "webpack": "^5.3.2",
+    "webpack": "^5.4.0",
     "webpack-cli": "^4.1.0",
     "ws": "^7.3.1",
     "xterm-benchmark": "^0.1.3"