Data modeling add to GitHub registry (#217)

* add github registry config, action workflow

* Update CHANGELOG.md

* update action

* Update github-registry-data-modeling.yml

* Update github-registry-data-modeling.yml

* Update github-registry-data-modeling.yml

Author: a-s-g93

.github/workflows/github-registry-data-modeling.yml

@@ -14,6 +14,9 @@ jobs:
       contents: read
 
     steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
       # MCP publishing (works for all package types)
       - name: Download MCP Publisher
         run: |