Update file .gitlab-ci.yml

.gitlab-ci.yml

 image: ${CI_DEPENDENCY_PROXY_DIRECT_GROUP_IMAGE_PREFIX}/${MENTAT_IMAGE}:latest
 
 # Change pip's cache directory to be inside the project directory since we can
-# only cache local items.
+# only cache local items. 
 variables:
   PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"