chore(ci): update action dependencies

[zouyonghe]

Summary

• Updates GitHub Actions workflow dependencies to current stable tags.
• Keeps already-current actions unchanged and preserves existing workflow behavior.

Verification

• go run github.com/rhysd/actionlint/cmd/actionlint@v1.7.12

Summary by Sourcery

Update GitHub Actions workflows to use newer stable versions of key third-party actions while preserving existing CI behavior.

Build:

• Bump pnpm/action-setup to v6.0.3 in workflows using pnpm.
• Upgrade actions/cache to v5.0.5 in Rust check workflow.

CI:

• Update actions/upload-artifact to v7.0.1 and actions/download-artifact to v8.0.1 in desktop build workflow.
• Upgrade softprops/action-gh-release to v3.0.0 in the release job.
• Bump rhysd/actionlint used in workflow linting to v1.7.12.

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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