feat: opt into Blacksmith Linux runners

[Yan Xue (yanxue06)]

Set use-blacksmith: true on the buildspace workflow calls (release and
check-readme) so jobs run on blacksmith-4vcpu-ubuntu-2404 instead of
ubuntu-latest.

Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com

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📥 Commits

Reviewing files that changed from the base of the PR and between 1294f2b and 3e1e04d.

📒 Files selected for processing (2)

• .github/workflows/check-readme.yaml
• .github/workflows/release.yaml

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[Copilot]

Pull request overview

This PR opts the repository’s reusable Buildspace GitHub Actions workflows into running on Blacksmith Linux runners by passing use-blacksmith: true to the called workflows, aligning CI execution with blacksmith-4vcpu-ubuntu-2404 instead of ubuntu-latest.

Changes:

• Pass use-blacksmith: true to the reusable Buildspace release.yaml workflow call.
• Pass use-blacksmith: true to the reusable Buildspace check-readme.yaml workflow call.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/release.yaml	Adds use-blacksmith: true to the reusable release workflow inputs.
.github/workflows/check-readme.yaml	Adds use-blacksmith: true to the reusable README-check workflow inputs.

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