Hotfix 21.08 release for five libraries

Overview

Four RAPIDS libraries were hotfixed to version 21.08.01 and cuDF was hotfixed to version 21.08.02.

Rationale

rmm, cuml, cugraph, and cuspatial were hotfixed to 21.08.01. cudf was hotfixed to 21.08.02. These five libraries were hotfixed in order to fix the conda package location of the CMake configuration files, #56.

Impact

All v21.08 users are encouraged to update rmm, cuml, cugraph, and cuspatial libraries to 21.08.01 and cuDF to 21.08.02 as soon as possible.