Bump webpack-merge from 5.2.0 to 5.4.0

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 5.2.0 to 5.4.0.
- [Release notes](https://github.com/survivejs/webpack-merge/releases)
- [Changelog](https://github.com/survivejs/webpack-merge/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/survivejs/webpack-merge/compare/v5.2.0...v5.4.0)

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

package.json

@@ -287,6 +287,6 @@
     "webpack-cli": "^4.2.0",
     "webpack-dev-server": "^3.11.0",
     "webpack-hot-middleware": "^2.25.0",
-    "webpack-merge": "^5.2.0"
+    "webpack-merge": "^5.4.0"
   }
 }

yarn.lock

@@ -13562,10 +13562,10 @@ webpack-merge@^4.2.2:
   dependencies:
     lodash "^4.17.15"
 
-webpack-merge@^5.2.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-5.2.0.tgz#31cbcc954f8f89cd4b06ca8d97a38549f7f3f0c9"
-  integrity sha512-QBglJBg5+lItm3/Lopv8KDDK01+hjdg2azEwi/4vKJ8ZmGPdtJsTpjtNNOW3a4WiqzXdCATtTudOZJngE7RKkA==
+webpack-merge@^5.4.0:
+  version "5.4.0"
+  resolved "https://registry.yarnpkg.com/webpack-merge/-/webpack-merge-5.4.0.tgz#81bef0a7d23fc1e6c24b06ad8bf22ddeb533a3a3"
+  integrity sha512-/scBgu8LVPlHDgqH95Aw1xS+L+PHrpHKOwYVGFaNOQl4Q4wwwWDarwB1WdZAbLQ24SKhY3Awe7VZGYAdp+N+gQ==
   dependencies:
     clone-deep "^4.0.1"
     wildcard "^2.0.0"