Update file-loader requirement from ^0.8.4 to ^2.0.0

Updates the requirements on [file-loader](https://github.com/webpack-contrib/file-loader) to permit the latest version.
- [Release notes](https://github.com/webpack-contrib/file-loader/releases)
- [Changelog](https://github.com/webpack-contrib/file-loader/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/file-loader@v0.8.4...v2.0.0)

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

Author: dependabot-preview[bot]

package.json

@@ -40,7 +40,7 @@
     "classnames": "^2.1.3",
     "css-loader": "^0.28.5",
     "extract-text-webpack-plugin": "^3.0.0",
-    "file-loader": "^0.8.4",
+    "file-loader": "^2.0.0",
     "image-webpack-loader": "^3.3.1",
     "node-env-file": "^0.1.8",
     "node-sass": "^4.5.3",