Require urllib3 version 1.26 or higher

We're using the `allowed_methods` parameter to the `Retry` class from
urllib3. That parameter was introduced in version 1.26, so require
that in `setup.py` to avoid users using an older urllib3 version with
this `okdata-sdk-python`.

Author: simenheg

CHANGELOG.md

@@ -3,6 +3,7 @@
 * Added support for Python 3.12.
 * Dropped support for Python 3.7 which has reached end of life. Python 3.8+ is
   now required.
+* Fixed version requirement for urllib3.
 
 ## 2.4.1
 

requirements.txt

@@ -1,6 +1,6 @@
 #
-# This file is autogenerated by pip-compile with python 3.10
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    pip-compile
 #
@@ -39,4 +39,6 @@ rsa==4.8
 six==1.16.0
     # via ecdsa
 urllib3==1.26.18
-    # via requests
+    # via
+    #   okdata-sdk (setup.py)
+    #   requests

setup.py

@@ -22,7 +22,8 @@
         "PyJWT>=2.0.0",
         "python-jose>=3.1.0,<4.0.0",
         "python-keycloak",
-        "requests",
+        "requests>=2.25,<3",
+        "urllib3>=1.26,<2",
     ],
     data_files=[
         (