Potential fix for code scanning alert no. 7: Failure to use secure cookies

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: WirelessLife

archive/Events and Hacks/Tech Talks/ContainerDemo/example-voting-app/vote/app.py

@@ -38,7 +38,7 @@ def hello():
         hostname=hostname,
         vote=vote,
     ))
-    resp.set_cookie('voter_id', voter_id)
+    resp.set_cookie('voter_id', voter_id, secure=True, httponly=True, samesite='Lax')
     return resp