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

@@ -1,2 +1,2 @@
 pytz==2019.3
-requests==2.18.4
+requests==2.20.0

setup.py

@@ -24,7 +24,7 @@
     author='Ederson Brilhante',
     author_email='ederson.brilhante@corp.globo.com',
     install_requires=[
-        'requests==2.18.4'
+        'requests==2.20.0'
     ],
     url='https://github.com/globocom/globomap-loader-api-client',
     packages=['globomap_loader_api_client'],