Remove urllib3 version pin (#2144)

Co-authored-by: tracyboehrer <tracyboehrer@users.noreply.github.com>

Author: adamchainz

libraries/botbuilder-schema/setup.py

@@ -6,7 +6,10 @@
 
 NAME = "botbuilder-schema"
 VERSION = os.environ["packageVersion"] if "packageVersion" in os.environ else "4.17.0"
-REQUIRES = ["msrest== 0.7.*", "urllib3<2.0.0"]
+REQUIRES = [
+ "msrest== 0.7.*",
+ "urllib3",
+]
 
 root = os.path.abspath(os.path.dirname(__file__))