Bumps [flask-restful](https://github.com/flask-restful/flask-restful) from 0.3.7 to 0.3.8.
- [Release notes](https://github.com/flask-restful/flask-restful/releases)
- [Changelog](https://github.com/flask-restful/flask-restful/blob/master/CHANGES.md)
- [Commits](https://github.com/flask-restful/flask-restful/compare/0.3.7...0.3.8)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>