Add ziglang.org to build.yml harden-runner allowlist

[spoorcc]

The Windows build job runs choco install zig but its harden-runner
allowed-endpoints list was missing ziglang.org, which the choco
package downloads from. run.yml already allows it for the same step.

Summary by CodeRabbit

• Chores
  • Updated build configuration to allow required network access for Zig tooling during automated builds.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: a2909a76-2fde-4860-8503-be9a8baf1612

📥 Commits

Reviewing files that changed from the base of the PR and between b091a2a and 7899d68.

📒 Files selected for processing (1)

• .github/workflows/build.yml

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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Walkthrough

The build workflow now permits the build job to access ziglang.org:443 through its harden-runner configuration.

Changes

Build workflow egress

Layer / File(s)	Summary
Allow Zig website access .github/workflows/build.yml	Adds ziglang.org:443 to the build job's allowed-endpoints list.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 7899d

This change only permits the Windows build to reach ziglang.org for the existing Zig installation step; no actionable merge-blocking risk remains.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding ziglang.org to the build.yml harden-runner allowlist.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/github-action-ci-hotfix-c4nkg0

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