Bump requests from 2.13.0 to 2.20.0 in /Fintech-Banking-Chatbot

Bumps [requests](https://github.com/requests/requests) from 2.13.0 to 2.20.0.
- [Release notes](https://github.com/requests/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/master/HISTORY.md)
- [Commits](psf/requests@v2.13.0...v2.20.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Fintech-Banking-Chatbot/ai-engine/requirements.txt

@@ -7,4 +7,4 @@ gevent==1.2.1
 git+https://github.com/mit-nlp/MITIE.git
 numpy==1.12.0
 rasa-nlu==0.7.2
-requests==2.13.0
+requests==2.20.0

Fintech-Banking-Chatbot/requirements.txt

@@ -7,4 +7,4 @@ gevent==1.2.1
 git+https://github.com/mit-nlp/MITIE.git
 numpy==1.12.0
 rasa-nlu==0.7.2
-requests==2.13.0
+requests==2.20.0