Update UCX-Py version to 0.21

[pentschev]

No description provided.

[pentschev]

Waiting for #3949 to be merged first.

[ajschmidt8]

rerun tests

[ajschmidt8]

@gpucibot merge

[pentschev]

Seems like this is failing trying to install xgboost:

19:45:03 PackagesNotFoundError: The following packages are not available from current channels:
19:45:03 

19:45:03   - xgboost=1.4.2dev.rapidsai21.08

@dantegd @ajschmidt8 what's the right way to fix this?

[ajschmidt8]

Seems like this is failing trying to install xgboost:

19:45:03 PackagesNotFoundError: The following packages are not available from current channels:
19:45:03 

19:45:03   - xgboost=1.4.2dev.rapidsai21.08

@dantegd @ajschmidt8 what's the right way to fix this?

Sounds like we're missing a 21.08 version of xgboost. I'll get one published.

[ajschmidt8]

xgboost is published (https://anaconda.org/rapidsai-nightly/xgboost/files?version=1.4.2dev.rapidsai21.08)

rerun tests

[dantegd]

rerun tests

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (branch-21.08@bcb7b6c). Click here to learn what that means.
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@@               Coverage Diff               @@
##             branch-21.08    #3950   +/-   ##
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  Coverage                ?   85.32%           
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  Files                   ?      230           
  Lines                   ?    18095           
  Branches                ?        0           
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  Hits                    ?    15439           
  Misses                  ?     2656           
  Partials                ?        0           

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