ci: fix tao udeps environment

[OlympusLedgerOrg]

Fixes the dev Udeps failure for ./ports/tao by installing libadwaita-1-dev, which is required when cargo udeps runs with --all-features. Also pins actions/download-artifact v8.0.1 at its immutable SHA to use the supported Node 24 runtime and clear the deprecation warning.

Validation:

• repository Prettier check passed
• git diff --check passed

Failing run: https://github.com/OlympusLedgerOrg/tauri/actions/runs/29767841539

Summary by CodeRabbit

• Chores
  • Improved workflow reliability by pinning an artifact download action to a specific revision.
  • Added required Linux development package support for libadwaita-based builds.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 73b4f8ff-0d63-4da2-992d-d47dafa07528

📥 Commits

Reviewing files that changed from the base of the PR and between dd63399 and 7cd73a3.

📒 Files selected for processing (1)

• .github/workflows/udeps.yml

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📝 Walkthrough

Walkthrough

The udeps GitHub Actions job now pins its artifact download action to a commit SHA and installs libadwaita-1-dev alongside the existing Ubuntu development packages.

Changes

Udeps workflow

Layer / File(s)	Summary
Workflow dependency setup .github/workflows/udeps.yml	The artifact download action uses a pinned commit SHA, and the Ubuntu package list includes libadwaita-1-dev.

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

Suggested reviewers: legend-master

🚥 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 matches the CI change to fix the tao udeps environment.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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)

• Create PR with unit tests
• Commit unit tests in branch codex/fix-tao-udeps-libadwaita

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