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/psf/requests/blob/master/HISTORY.md)
- [Commits](psf/requests@v2.18.4...v2.20.0)

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

Author: dependabot[bot]

requirements.txt

@@ -160,7 +160,7 @@ pyzmq==16.0.2
 QtAwesome==0.4.4
 qtconsole==4.3.1
 QtPy==1.3.1
-requests==2.18.4
+requests==2.20.0
 rope==0.10.5
 ruamel-yaml==0.11.14
 scikit-image==0.13.0

requirements_4-6-2021.txt

@@ -160,7 +160,7 @@ pyzmq==18.1.0
 QtAwesome==0.6.0
 qtconsole==4.5.5
 QtPy==1.9.0
-requests==2.22.0
+requests==2.20.0
 rope==0.14.0
 ruamel-yaml==0.15.46
 scikit-image==0.15.0