chore(deps): update dependency urllib3 to v1.25.9 (#3)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

requirements.txt

@@ -2,4 +2,4 @@ certifi==2020.4.5.1
 chardet==3.0.4
 idna==2.9
 requests==2.23.0
-urllib3==1.25.8
+urllib3==1.25.9