Update CI/CD workflow to trigger on changes to the workflow file

Author: crmne

.github/workflows/cicd.yml

@@ -9,6 +9,7 @@ on:
       - 'Gemfile'
       - 'Rakefile'
       - 'ruby_llm.gemspec'
+      - '.github/workflows/cicd.yml'
   pull_request:
     branches: [ "main" ]
     paths:
@@ -17,6 +18,7 @@ on:
       - 'Gemfile'
       - 'Rakefile'
       - 'ruby_llm.gemspec'
+      - '.github/workflows/cicd.yml'
   workflow_call:
 
 # Define default permissions for this workflow