Update build-demos.yml

git stash pop should not error if no stash.

Author: regeter

.github/workflows/build-demos.yml

@@ -72,7 +72,7 @@ jobs:
           git pull origin main --rebase
 
           echo "Applying stashed changes..."
-          git stash pop
+          git stash pop || true
 
           echo "Adding and committing changes..."
           git add demos/