actions: upgrade to upload-artifact v7

Author: carlosame

.github/workflows/examples.yml

@@ -37,7 +37,7 @@ jobs:
 
       # Upload test artifact
       - name: Upload test output
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         if: ${{ failure() }}
         with:
           name: test-output