Bump webpack from 4.47.0 to 5.94.0

Bumps [webpack](https://github.com/webpack/webpack) from 4.47.0 to 5.94.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.47.0...v5.94.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
...

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

package.json

@@ -20,7 +20,7 @@
     "turbolinks": "^5.2.0"
   },
   "devDependencies": {
-    "webpack": "^4.x",
+    "webpack": "^5.x",
     "webpack-cli": "^3.3.12",
     "webpack-dev-server": "^4.x"
   },