deepseek-tui: Update to version 0.8.18

[Hmbown]

Updates deepseek-tui to 0.8.18.\n\nRelease: https://github.com/Hmbown/DeepSeek-TUI/releases/tag/v0.8.18\nChecksum manifest: https://github.com/Hmbown/DeepSeek-TUI/releases/download/v0.8.18/deepseek-artifacts-sha256.txt

[Copilot]

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[z-Fng]

The manifest will update automatically as the package updates, as long as the upstream releases new packages that follow the same pattern defined in the manifest.

Duplicates cb005c6.

Thanks for your contribution. However, if the release format remains unchanged, there is no need to resubmit a PR. Our automated workflow will automatically detect and retrieve the latest release via the GitHub API.

For more infomation, see: https://github.com/ScoopInstaller/Scoop/wiki/App-Manifest-Autoupdate