84da7cc67d
Add blacksmith-2vcpu-ubuntu-2204 (used by GNU Linux release builds) to actionlint's self-hosted-runner labels. Remove stale Hetzner/self-hosted labels (racknerd, aws-india, light, cpu40, codeql, codeql-general, hetzner, Linux, X64) that are no longer referenced in any workflow. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>