Bump webpack-merge from 4.2.1 to 4.2.2

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 4.2.1 to 4.2.2.
- [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/v4.2.1...v4.2.2)

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

package.json

@@ -84,7 +84,7 @@
 		"vue-template-compiler": "^2.6.10",
 		"webpack": "^4.39.2",
 		"webpack-cli": "^3.3.7",
-		"webpack-merge": "^4.2.1"
+		"webpack-merge": "^4.2.2"
 	},
 	"jest": {
 		"moduleFileExtensions": [