Ruby common test paths

- rspec: https://rspec.info/features/6-0/rspec-rails/directory-structure/

- minitest: https://docs.seattlerb.org/minitest/Minitest.html#module-Minitest-label-Rake+Tasks

Author: felickz

configs/synthetics.yml

@@ -123,5 +123,7 @@ paths-ignore:
 
     # Ruby
     - "**/gems/**"
+    - "**/spec/**/*_spec.rb"
+    - "**/test/**/*_test.rb"