fix pipeline

.gitlab-ci.yml

 pages:
   stage: deploy
   script:
-    - bundle exec jekyll build -d public  # Use `bundle exec` to ensure the command runs within Bundler's context
+    - jekyll build -d public  # Use `bundle exec` to ensure the command runs within Bundler's context
     - echo "The site will be deployed to $CI_PAGES_URL"
   artifacts:
     paths:

Gemfile

-source 'https://rubygems.org'
-
-gem "jekyll", "~> 4.3.3" # installed by `gem jekyll`
-# gem "webrick"        # required when using Ruby >= 3 and Jekyll <= 4.2.2
-
-gem "just-the-docs", "0.7.0" # pinned to the current release
-# gem "just-the-docs"        # always download the latest release