Update request urllib3 (#464)

* requests: updated to version 2.27.1

* urllib3: updated to version 1.26.18

lib/urllib3/contrib/ntlmpool.py

@@ -5,12 +5,21 @@ Issue #10, see: http://code.google.com/p/urllib3/issues/detail?id=10
 """
 from __future__ import absolute_import
 
+import warnings
 from logging import getLogger
+
 from ntlm import ntlm
 
 from .. import HTTPSConnectionPool
 from ..packages.six.moves.http_client import HTTPSConnection
 
+warnings.warn(
+    "The 'urllib3.contrib.ntlmpool' module is deprecated and will be removed "
+    "in urllib3 v2.0 release, urllib3 is not able to support it properly due "
+    "to reasons listed in issue: https://github.com/urllib3/urllib3/issues/2282. "
+    "If you are a user of this module please comment in the mentioned issue.",
+    DeprecationWarning,
+)
 
 log = getLogger(__name__)
 
@@ -60,7 +69,7 @@ class NTLMConnectionPool(HTTPSConnectionPool):
         log.debug("Request headers: %s", headers)
         conn.request("GET", self.authurl, None, headers)
         res = conn.getresponse()
-        reshdr = dict(res.getheaders())
+        reshdr = dict(res.headers)
         log.debug("Response status: %s %s", res.status, res.reason)
         log.debug("Response headers: %s", reshdr)
         log.debug("Response data: %s [...]", res.read(100))
@@ -92,13 +101,11 @@ class NTLMConnectionPool(HTTPSConnectionPool):
         conn.request("GET", self.authurl, None, headers)
         res = conn.getresponse()
         log.debug("Response status: %s %s", res.status, res.reason)
-        log.debug("Response headers: %s", dict(res.getheaders()))
+        log.debug("Response headers: %s", dict(res.headers))
         log.debug("Response data: %s [...]", res.read()[:100])
         if res.status != 200:
             if res.status == 401:
-                raise Exception(
-                    "Server rejected request: wrong " "username or password"
-                )
+                raise Exception("Server rejected request: wrong username or password")
             raise Exception("Wrong server response: %s %s" % (res.status, res.reason))
 
         res.fp = None