Revert "Pin urllib3 to <2.0.0 for now (#2069)"

This reverts commit 0d301bb.

Author: asottile-sentry

setup.py

@@ -41,7 +41,6 @@ def get_file_text(file_name):
         'urllib3>=1.25.7; python_version<="3.4"',
         'urllib3>=1.26.9; python_version=="3.5"',
         'urllib3>=1.26.11; python_version >="3.6"',
-        'urllib3<2.0.0',
         "certifi",
     ],
     extras_require={