Chore: [AEA-0000] - only commit to gh-pages if there are changes (#723)

## Summary

- Routine Change

### Details
- only commit to gh-pages if there are changes

Author: anthony-nhs

.github/workflows/release.yml

@@ -117,6 +117,10 @@ jobs:
       - name: Update docs in github pages
         run: |
           cd gh-pages
+          if git diff --quiet -- index.html; then
+            echo "No changes in index.html. Skipping git add, commit, and push."
+            exit 0
+          fi
           git config user.name github-actions
           git config user.email github-actions@github.com
           git add "index.html"