Bump requests from 2.18.4 to 2.20.0

Bumps [requests](https://github.com/requests/requests) from 2.18.4 to 2.20.0.
- [Release notes](https://github.com/requests/requests/releases)
- [Changelog](https://github.com/kennethreitz/requests/blob/master/HISTORY.md)
- [Commits](https://github.com/requests/requests/compare/v2.18.4...v2.20.0)

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

requirements-docker37.txt

@@ -1,5 +1,5 @@
 bs4==0.0.1
-requests==2.18.4
+requests==2.20.0
 Pillow
 wrapcache==1.0.8
 ntplib==0.3.3

requirements.txt

@@ -1,6 +1,6 @@
 beautifulsoup4==4.5.3
 bs4==0.0.1
-requests==2.18.4
+requests==2.20.0
 Pillow
 wrapcache==1.0.8
 ntplib==0.3.3