chore(deps-dev): update webpack-merge requirement in /src (#3044)

Updates the requirements on [webpack-merge](https://github.com/survivejs/webpack-merge) to permit the latest version.
- [Changelog](https://github.com/survivejs/webpack-merge/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/survivejs/webpack-merge/compare/v5.9.0...v5.10.0)

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

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

src/package.json

@@ -19,6 +19,6 @@
     "webpack": "^5.88.2",
     "webpack-cli": "^5.1.4",
     "webpack-dev-server": "^4.15.1",
-    "webpack-merge": "^5.9.0"
+    "webpack-merge": "^5.10.0"
   }
 }