Bump babel-loader from 7.1.4 to 7.1.5 in /js

Bumps [babel-loader](https://github.com/babel/babel-loader) from 7.1.4 to 7.1.5.
- [Release notes](https://github.com/babel/babel-loader/releases)
- [Changelog](https://github.com/babel/babel-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel-loader/compare/v7.1.4...v7.1.5)

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

js/package.json

@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "babel-core": "^6.26.0",
-    "babel-loader": "^7.1.2",
+    "babel-loader": "^7.1.5",
     "babel-preset-env": "^1.7.0",
     "css-loader": "^0.28.9",
     "karma": "^2.0.4",