Pipeline: set python version to 3.10

.gitlab-ci.yml

@@ -20,7 +20,7 @@
 
 # Official language image. Look for the different tagged releases at:
 # https://hub.docker.com/r/library/python/tags/
-image: python:latest
+image: python:3.10 #Otherwise use 'latest'
 
 # Change pip's cache directory to be inside the project directory since we can
 # only cache local items.