Update request urllib3 (#464)

* requests: updated to version 2.27.1

* urllib3: updated to version 1.26.18

lib/urllib3/__init__.py

@@ -1,28 +1,44 @@
 """
-urllib3 - Thread-safe connection pooling and re-using.
+Python HTTP library with thread-safe connection pooling, file post support, user friendly, and more
 """
 from __future__ import absolute_import
-import warnings
 
-from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
+# Set default logging handler to avoid "No handler found" warnings.
+import logging
+import warnings
+from logging import NullHandler
 
 from . import exceptions
+from ._version import __version__
+from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
 from .filepost import encode_multipart_formdata
 from .poolmanager import PoolManager, ProxyManager, proxy_from_url
 from .response import HTTPResponse
 from .util.request import make_headers
-from .util.url import get_host
-from .util.timeout import Timeout
 from .util.retry import Retry
+from .util.timeout import Timeout
+from .util.url import get_host
 
-
-# Set default logging handler to avoid "No handler found" warnings.
-import logging
-from logging import NullHandler
+# === NOTE TO REPACKAGERS AND VENDORS ===
+# Please delete this block, this logic is only
+# for urllib3 being distributed via PyPI.
+# See: https://github.com/urllib3/urllib3/issues/2680
+try:
+    import urllib3_secure_extra  # type: ignore # noqa: F401
+except ImportError:
+    pass
+else:
+    warnings.warn(
+        "'urllib3[secure]' extra is deprecated and will be removed "
+        "in a future release of urllib3 2.x. Read more in this issue: "
+        "https://github.com/urllib3/urllib3/issues/2680",
+        category=DeprecationWarning,
+        stacklevel=2,
+    )
 
 __author__ = "Andrey Petrov (andrey.petrov@shazow.net)"
 __license__ = "MIT"
-__version__ = "1.25.6"
+__version__ = __version__
 
 __all__ = (
     "HTTPConnectionPool",