Update demo

Workflow runs for Update demo

• Support Python 3.11 through 3.15

  completed successfully:
  Update demo#47:Commit5e57160pushedbysimonw
  main

  Oct 12, 202625s
  More actions for workflow run 47

• Drop 3.8, add 3.14, update Actions workflows

  completed successfully:
  Update demo#46:Commit84298e2pushedbysimonw
  main

  Oct 9, 202524s
  More actions for workflow run 46