Spack buildcache build

Workflow runs for Spack buildcache build

• Bump spack/setup-spack from 2 to 3

  failed:
  Spack buildcache build#46:Pull request#6openedbydependabot[bot]Bot
  dependabot/github_actions/spack/setup-spack-3

  Feb 9, 20261m 2s
  More actions for workflow run 46

• Bump actions/checkout from 4 to 6 (#5)

  failed:
  Spack buildcache build#45:Commiteb060b1pushedbygiordano
  main

  Nov 24, 20251m 55s
  More actions for workflow run 45

• Bump actions/checkout from 4 to 6

  failed:
  Spack buildcache build#44:Pull request#5openedbydependabot[bot]Bot
  dependabot/github_actions/actions/checkout-6

  Nov 24, 20251m 55s
  More actions for workflow run 44