Bump babel-loader from 7.1.4 to 7.1.5 (#1771)

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](babel/babel-loader@v7.1.4...v7.1.5)

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

package.json

@@ -40,7 +40,7 @@
     "ajv-cli": "^2.1.0",
     "autoprefixer": "^7.2.6",
     "babel-core": "^6.26.3",
-    "babel-loader": "^7.1.4",
+    "babel-loader": "^7.1.5",
     "babel-preset-es2015": "^6.24.1",
     "babel-preset-react": "^6.24.1",
     "browserslist": "^2.11.3",