feat: add scenario documentation and update CI workflow for sis01_healthcare verification

Author: cliffe

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ruby-3.3.6
+          ruby-version: 2.7.8
           bundler-cache: true
 
       - name: Lint code for consistent style
@@ -34,7 +34,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ruby-3.3.6
+          ruby-version: 2.7.8
           bundler-cache: true
 
       - name: Run tests