Bump flask-cors from 3.0.4 to 3.0.9

Bumps [flask-cors](https://github.com/corydolphin/flask-cors) from 3.0.4 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/3.0.4...3.0.9

)

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

requirements.txt

@@ -9,6 +9,6 @@ flask_mongoengine==0.9.5
 indic-transliteration==1.8.8
 kafka-python==1.4.7
 python-dateutil==2.7.3
-Flask-Cors==3.0.4
+Flask-Cors==3.0.9
 ctranslate2==1.8.0
 colorama==0.3.9
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