Bump webpack-merge from 5.8.0 to 5.9.0 (#490)

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 5.8.0 to 5.9.0.
- [Changelog](https://github.com/survivejs/webpack-merge/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/survivejs/webpack-merge/commits)

---
updated-dependencies:
- dependency-name: webpack-merge
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -94,7 +94,7 @@
     "webpack-cli": "^5.1.4",
     "webpack-dev-server": "^4.15.0",
     "webpack-manifest-plugin": "^5.0.0",
-    "webpack-merge": "^5.8.0"
+    "webpack-merge": "^5.9.0"
   },
   "browserslist": [
     ">0.2%",

yarn.lock

@@ -9426,10 +9426,10 @@ webpack-manifest-plugin@^5.0.0:
     tapable "^2.0.0"
     webpack-sources "^2.2.0"
 
-webpack-merge@^5.7.3, webpack-merge@^5.8.0:
-  version "5.8.0"
-  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-5.8.0.tgz#2b39dbf22af87776ad744c390223731d30a68f61"
-  integrity sha512-/SaI7xY0831XwP6kzuwhKWVKDP9t1QY1h65lAFLbZqMPIuYcD9QAW4u9STIbU9kaJbPBB/geU/gLr1wDjOhQ+Q==
+webpack-merge@^5.7.3, webpack-merge@^5.9.0:
+  version "5.9.0"
+  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-5.9.0.tgz#dc160a1c4cf512ceca515cc231669e9ddb133826"
+  integrity sha512-6NbRQw4+Sy50vYNTw7EyOn41OZItPiXB8GNv3INSoe3PSFaHJEz3SHTrYVaRm2LilNGnFUzh0FAwqPEmU/CwDg==
   dependencies:
     clone-deep "^4.0.1"
     wildcard "^2.0.0"