Bump file-loader from 5.1.0 to 6.0.0

Bumps [file-loader](https://github.com/webpack-contrib/file-loader) from 5.1.0 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](https://github.com/webpack-contrib/file-loader/compare/v5.1.0...v6.0.0)

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

package.json

@@ -33,7 +33,7 @@
     "css-loader": "^3.4.2",
     "debug": "^4.1.1",
     "ejs": "^3.0.1",
-    "file-loader": "^5.1.0",
+    "file-loader": "^6.0.0",
     "iso8601-duration": "^1.1.1",
     "kcors": "^2.2.1",
     "koa": "^2.11.0",