Cache action regression tests

Workflow runs for Cache action regression tests

• ci: tolerate optional S3 cache export outages on v4.3-dev

  completed successfully:
  Cache action regression tests#2:Pull request#5187synchronizebyktechmidas
  ci/v43-optional-cache-rollout-20260929

  Sep 29, 202619s
  More actions for workflow run 2

• ci: tolerate optional S3 cache export outages on chore/bump-rust-dashcore-secp-033

  completed successfully:
  Cache action regression tests#1:Pull request#5188synchronizebyktechmidas
  ci/secp-optional-cache-rollout-20260929

  Sep 29, 202616s
  More actions for workflow run 1