Bump file-loader from 5.1.0 to 6.0.0 (#13899)

Bump file-loader from 5.1.0 to 6.0.0 (#13899)

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)

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