Bump webpack-merge from 4.1.2 to 4.1.3 in /apps/updatenotification

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 4.1.2 to 4.1.3.
- [Release notes](https://github.com/survivejs/webpack-merge/releases)
- [Changelog](https://github.com/survivejs/webpack-merge/blob/master/CHANGELOG.md)
- [Commits](https://github.com/survivejs/webpack-merge/compare/v4.1.2...v4.1.3)

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

apps/updatenotification/package-lock.json

@@ -6988,9 +6988,9 @@
       }
     },
     "webpack-merge": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-4.1.2.tgz",
-      "integrity": "sha512-/0QYwW/H1N/CdXYA2PNPVbsxO3u2Fpz34vs72xm03SRfg6bMNGfMJIQEpQjKRvkG2JvT6oRJFpDtSrwbX8Jzvw==",
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/webpack-merge/-/webpack-merge-4.1.3.tgz",
+      "integrity": "sha512-zxwAIGK7nKdu5CIZL0BjTQoq3elV0t0MfB7rUC1zj668geid52abs6hN/ACwZdK6LeMS8dC9B6WmtF978zH5mg==",
       "dev": true,
       "requires": {
         "lodash": "^4.17.5"

apps/updatenotification/package.json

@@ -34,6 +34,6 @@
     "vue-template-compiler": "^2.5.16",
     "webpack": "^4.12.0",
     "webpack-cli": "^3.0.8",
-    "webpack-merge": "^4.1.2"
+    "webpack-merge": "^4.1.3"
   }
 }