Bump file-loader from 5.0.2 to 6.0.0

Bumps [file-loader](https://github.com/webpack-contrib/file-loader) from 5.0.2 to 6.0.0.
- [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@v5.0.2...v6.0.0)

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

package.json

@@ -124,7 +124,7 @@
     "eslint": "^6.8.0",
     "eslint-plugin-markdown": "^1.0.0",
     "eslint-plugin-react": "^7.17.0",
-    "file-loader": "^5.0.2",
+    "file-loader": "^6.0.0",
     "fork-ts-checker-webpack-plugin": "^4.0.2",
     "jest": "^25.1.0",
     "jest-canvas-mock": "^2.1.1",