Bump k8s.io/code-generator from 0.28.3 to 0.28.4 · sigstore/scaffolding@af7eec3

Canceling since a higher priority waiting request for 'fulcio-rekor-kind-using-release-dependabot/go_modules/k8s.io/code-generator-0.28.4' exists

The operation was canceled.

Restore cache failed: Dependencies file is not found in /home/runner/work/scaffolding/scaffolding. Supported file pattern: go.sum