Use latest pip in CircleCI tests

Author: jamesmyatt

.circleci/config.yml

@@ -66,6 +66,8 @@ workflows:
           matrix:
             parameters:
               version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+          parameters:
+            pip-overrides: "-U pip"
       - orb/docs:
           name: "Docs"
           requires: ["Test"]