Update cimg/python Docker tag to v3.13.8 (#200)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2.1
 executors:
   my-executor:
     docker:
-      - image: cimg/python:3.13.6-browsers
+      - image: cimg/python:3.13.8-browsers
     working_directory: ~/CircleCIWork
 
 orbs: