Update cimg/python Docker tag to v3.13

Author: renovate[bot]

.circleci/config.yml

@@ -5,7 +5,7 @@ orbs:
 jobs:
   ensure_formatting:
     docker:
-      - image: cimg/python:3.12
+      - image: cimg/python:3.13
     working_directory: ~/repo
     steps:
       - checkout
@@ -44,7 +44,7 @@ jobs:
   build:
     working_directory: ~/opencti-client
     docker:
-      - image: cimg/python:3.12
+      - image: cimg/python:3.13
     steps:
       - checkout
       - run:
@@ -75,7 +75,7 @@ jobs:
   deploy:
     working_directory: ~/opencti-client
     docker:
-      - image: cimg/python:3.12
+      - image: cimg/python:3.13
     steps:
       - checkout
       - attach_workspace: