chore(deps): update dependency ubuntu to v26

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	OpenSSF
ubuntu	github-runner	major	24.04 → 26.04

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: cb46eb46-320f-4713-baa5-9ff03b2b17e5

📥 Commits

Reviewing files that changed from the base of the PR and between b25d54e and c97a0ff.

📒 Files selected for processing (2)

• .github/workflows/ci.yaml
• .github/workflows/release.yaml

Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review.

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📝 Walkthrough

Walkthrough

The CI check job and release update-sha job now run on Ubuntu 26.04 instead of Ubuntu 24.04.

Changes

CI runner updates

Layer / File(s)	Summary
Workflow runner configuration .github/workflows/ci.yaml, .github/workflows/release.yaml	The check and update-sha jobs now use Ubuntu 26.04 runners.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to c97a0

Both workflows target a supported Ubuntu 26.04 runner, so the update presents no identified merge-blocking risk.

🚥 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 describes the Ubuntu runner image update from version 24.04 to version 26.04.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

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