Use python requests 2.31.0.

- The previously installed requests==2.10.0 did not met the docker==4.0.2 requirements. Because of this pip always installed the latest version of requests when installing docker==4.0.2. This worked fine until requests==2.32.2 was installed. This version contained changes which made docker==4.0.2 package to fail with for example: "Error connecting: Error while fetching server API version: Not supported URL scheme http+docker". Installing requests==2.31.0 now avoids that the install of docker==4.0.2 updates to the latest requests.

ansible/roles/prereq/tasks/deploy.yml

@@ -30,7 +30,7 @@
 - name: install requests
   pip:
     name: requests
-    version: 2.10.0
+    version: 2.31.0
   become: true
 
 - name: install docker for python