Bump flask-cors from 3.0.6 to 3.0.9 in /server
Bump flask-cors from 3.0.6 to 3.0.9 in /server

Bumps [flask-cors](https://github.com/corydolphin/flask-cors) from 3.0.6 to 3.0.9.
- [Release notes](https://github.com/corydolphin/flask-cors/releases)
- [Changelog](https://github.com/corydolphin/flask-cors/blob/master/CHANGELOG.md)
- [Commits](https://github.com/corydolphin/flask-cors/compare/3.0.6...3.0.9)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
prabhakar267/vertikin