Bump webpack from 4.39.3 to 4.40.1

Bumps [webpack](https://github.com/webpack/webpack) from 4.39.3 to 4.40.1.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.39.3...v4.40.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -79,7 +79,7 @@
     "url-loader": "^2.1.0",
     "vue-loader": "^15.7.1",
     "vue-template-compiler": "^2.6.10",
-    "webpack": "^4.39.3",
+    "webpack": "^4.40.1",
     "webpack-cli": "^3.3.8",
     "webpack-merge": "^4.2.2",
     "webpack-node-externals": "^1.7.2"