ci: re-trigger linux-build (transient rust-lld SIGBUS on the lance-graph test link)

No code change. The linux-build job hit the same intermittent linker bus error
seen on #525 — rust-lld crashing in llvm::parallelFor during the final link of
the heavy lance-graph test binaries (collect2: ld terminated with signal 7).
#528 is doc + board only and does not touch lance-graph code, so this is a
runner resource flake, not a regression. API rerun-failed-jobs is 403 for this
token; empty commit re-triggers the workflow.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CcpLeEC3XK8Eye53GKBVvi

Author: claude