Update Ruby.gitlab-ci.yml for new vendor path

lib/gitlab/ci/templates/Ruby.gitlab-ci.yml

@@ -29,7 +29,8 @@ before_script:
   - ruby -v  # Print out ruby version for debugging
   # Uncomment next line if your rails app needs a JS runtime:
   # - apt-get update -q && apt-get install nodejs -yqq
-  - bundle install -j $(nproc) --path vendor  # Install dependencies into ./vendor/ruby
+  - bundle config set path 'vendor' # Install dependencies into ./vendor/ruby
+  - bundle install -j $(nproc)
 
 # Optional - Delete if not using `rubocop`
 rubocop: