We do not have a download file for the latest version (8.1.1), but you can try downloading it from the developer's site
Download version 8.0.19 from Software Informer
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The file is clean, see the report.
Version: 8.0.19 (x86/x64)
Date update: May 26, 2020
File name: mysql-shell-8.0.19-windows-x86-64bit.zip
Size: 36.5 MB