Bump vue-loader from 15.7.0 to 15.7.1 in /js

Bumps [vue-loader](https://github.com/vuejs/vue-loader) from 15.7.0 to 15.7.1.
- [Release notes](https://github.com/vuejs/vue-loader/releases)
- [Changelog](https://github.com/vuejs/vue-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue-loader/compare/v15.7.0...v15.7.1)

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

js/package.json

@@ -37,7 +37,7 @@
     "style-loader": "^0.23.1",
     "uglifyjs-webpack-plugin": "^2.1.3",
     "url-loader": "^2.1.0",
-    "vue-loader": "^15.7.0",
+    "vue-loader": "^15.7.1",
     "vue-style-loader": "^4.1.2",
     "vue-template-compiler": "^2.6.10",
     "webpack": "^4.37.0",