fix: relax upper bound for urllib dependency

Closes aws#4362

Author: jmahlik

setup.py

@@ -64,7 +64,7 @@ def read_requirements(filename):
     "jsonschema",
     "platformdirs",
     "tblib>=1.7.0,<3",
-    "urllib3<1.27",
+    "urllib3>=1.26.8,<3.0.0",
     "uvicorn==0.22.0",
     "fastapi==0.95.2",
     "requests",