Merge pull request #6 from xuzhengyi1995/dependabot/pip/urllib3-1.26.4

Bump urllib3 from 1.26.3 to 1.26.4

Author: xuzhengyi1995

requirements.txt

@@ -11,6 +11,6 @@ pyinstaller-hooks-contrib==2020.10
 pywin32-ctypes==0.2.0
 requests[socks]==2.25.0
 six==1.15.0
-urllib3==1.26.3
+urllib3==1.26.4
 validators==0.18.1
 cachetools==4.1.1