build(deps): bump flask-restful from 0.3.7 to 0.3.8 (#553)

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>

requirements.txt

@@ -74,7 +74,7 @@ amundsen-common>=0.3.6,<1.0
 
 # Library for rest endpoints with Flask
 # Upstream url: https://github.com/flask-restful/flask-restful
-flask-restful==0.3.7
+flask-restful==0.3.8
 
 # SDK for JIRA
 jira==2.0.0