Bump webpack from 5.94.0 to 5.104.1 in /react_frontend

Bumps [webpack](https://github.com/webpack/webpack) from 5.94.0 to 5.104.1.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Changelog](https://github.com/webpack/webpack/blob/main/CHANGELOG.md)
- [Commits](webpack/webpack@v5.94.0...v5.104.1)

---
updated-dependencies:
- dependency-name: webpack
  dependency-version: 5.104.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]

react_frontend/package.json

@@ -45,7 +45,7 @@
     "tailwindcss": "^3.4.13",
     "typescript": "^5.9.2",
     "typescript-eslint": "^8.42.0",
-    "webpack": "^5.94.0",
+    "webpack": "^5.104.1",
     "webpack-bundle-tracker": "^1.5.0",
     "webpack-cli": "^6.0.1"
   },