Bump file-loader from 4.0.0 to 5.0.2

Bumps [file-loader](https://github.com/webpack-contrib/file-loader) from 4.0.0 to 5.0.2.
- [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/v4.0.0...v5.0.2)

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

package.json

@@ -33,7 +33,7 @@
     "css-loader": "^2.1.1",
     "debug": "^4.1.1",
     "ejs": "^2.5.9",
-    "file-loader": "^4.0.0",
+    "file-loader": "^5.0.2",
     "iso8601-duration": "^1.1.1",
     "kcors": "^2.2.1",
     "koa": "^2.5.1",