Bump requests from 2.15.1 to 2.20.0

* Bump requests from 2.15.1 to 2.20.0

Bumps [requests](https://github.com/psf/requests) from 2.15.1 to 2.20.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/master/HISTORY.md)
- [Commits](psf/requests@v2.15.1...v2.20.0)

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

* Updated requests.txt

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Lorenzo Peña <lorinkoz@gmail.com>

requirements.txt

@@ -6,9 +6,10 @@ autobahn==21.2.1; python_version >= "3.6"
 automat==20.2.0; python_full_version >= "3.5.4" and python_version >= "3.5"
 babel==2.9.0; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
 black==20.8b1; python_version >= "3.6"
+certifi==2020.12.5; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
 cffi==1.14.5; python_version >= "3.6"
 channels==2.4.0; python_version >= "3.5"
-chardet==4.0.0; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0"
+chardet==3.0.4; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
 click==7.1.2; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.5.0" and python_version >= "3.6"
 colorama==0.4.4; python_version >= "2.7" and python_full_version < "3.0.0" and sys_platform == "win32" or python_full_version >= "3.5.0" and sys_platform == "win32"
 constantly==15.1.0; python_full_version >= "3.5.4" and python_version >= "3.5"
@@ -25,7 +26,7 @@ flake8-no-types==1.1.1; python_version >= "3.6"
 flake8-tidy-imports==4.2.1; python_version >= "3.6"
 flake8==3.8.4; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.4.0")
 hyperlink==21.0.0; python_full_version >= "3.5.4" and python_version >= "3.6"
-idna==3.1; python_full_version >= "3.5.4" and python_version >= "3.5" and (python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.4.0" and python_version >= "3.6")
+idna==2.7; python_full_version >= "3.5.4" and python_version >= "3.5" and (python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.4.0" and python_version >= "3.6")
 imagesize==1.2.0; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
 importlib-metadata==3.7.2; python_version >= "3.6" and python_full_version < "3.0.0" and python_version < "3.8" or python_full_version >= "3.4.0" and python_version < "3.8" and python_version >= "3.6"
 incremental==21.3.0; python_full_version >= "3.5.4" and python_version >= "3.5"
@@ -48,7 +49,7 @@ pyopenssl==20.0.1; python_full_version >= "3.5.4" and python_version >= "3.5"
 pyparsing==2.4.7; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
 pytz==2021.1; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.4.0" and python_version >= "3.6"
 regex==2020.11.13; python_version >= "3.6"
-requests==2.15.1; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
+requests==2.20.0; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0"
 restructuredtext-lint==1.3.2
 service-identity==18.1.0; python_full_version >= "3.5.4" and python_version >= "3.5"
 six==1.15.0; python_full_version >= "3.5.4" and python_version >= "3.5"
@@ -66,5 +67,6 @@ twisted==21.2.0; python_full_version >= "3.5.4" and python_version >= "3.5"
 txaio==21.2.1; python_version >= "3.6"
 typed-ast==1.4.2; python_version >= "3.6"
 typing-extensions==3.7.4.3; python_version >= "3.6" and python_full_version < "3.0.0" and python_version < "3.8" or python_full_version >= "3.4.0" and python_version < "3.8" and python_version >= "3.6"
+urllib3==1.24.3; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.4.0" and python_version < "4"
 zipp==3.4.1; python_version >= "3.6" and python_full_version < "3.0.0" and python_version < "3.8" or python_full_version >= "3.4.0" and python_version < "3.8" and python_version >= "3.6"
 zope.interface==5.2.0; python_full_version >= "3.5.4" and python_version >= "3.5"