Update python Docker tag to v3.14

Author: renovate[bot]

dreamkast_api/.gitlab-ci.yml

@@ -12,13 +12,13 @@ stages:
 
 test-3.5:
   extends: .tests
-  image: python:3.5-alpine
+  image: python:3.14-alpine
 test-3.6:
   extends: .tests
-  image: python:3.6-alpine
+  image: python:3.14-alpine
 test-3.7:
   extends: .tests
-  image: python:3.7-alpine
+  image: python:3.14-alpine
 test-3.8:
   extends: .tests
-  image: python:3.8-alpine
+  image: python:3.14-alpine