Update gpuCI `RAPIDS_VER` to `22.04` (#8600)
Update gpuCI `RAPIDS_VER` to `22.04` (#8600)

Co-authored-by: github-actions[bot] <17973dcf2e10b67f63417c88ca4c460b2c9439f2@users.noreply.github.com>
jakirkham/dask,blaze/dask,dask/dask,blaze/dask,dask/dask,jakirkham/dask