Pin max dask and distributed versions to 2021.09.1

[galipremsagar]

Changes to be in-line with: rapidsai/cudf#9286

[codecov-commenter]

Codecov Report

Merging #735 (4d8aadd) into branch-21.10 (8e6ab70) will decrease coverage by 24.66%.
The diff coverage is 82.84%.

❗ Current head 4d8aadd differs from pull request most recent head 9199522. Consider uploading reports for the commit 9199522 to get more accurate results

@@                Coverage Diff                @@
##           branch-21.10     #735       +/-   ##
=================================================
- Coverage         87.63%   62.97%   -24.67%     
=================================================
  Files                15       21        +6     
  Lines              1658     2895     +1237     
=================================================
+ Hits               1453     1823      +370     
- Misses              205     1072      +867     

Impacted Files	Coverage Δ
dask_cuda/benchmarks/local_cudf_merge.py	0.00% <0.00%> (ø)
dask_cuda/benchmarks/local_cudf_shuffle.py	0.00% <0.00%> (ø)
dask_cuda/benchmarks/local_cupy.py	0.00% <0.00%> (ø)
dask_cuda/benchmarks/local_cupy_map_overlap.py	0.00% <0.00%> (ø)
dask_cuda/benchmarks/utils.py	0.00% <0.00%> (ø)
dask_cuda/cuda_worker.py	77.64% <ø> (ø)
dask_cuda/get_device_memory_objects.py	90.00% <0.00%> (+21.94%)	⬆️
dask_cuda/utils.py	81.49% <60.52%> (-5.78%)	⬇️
dask_cuda/local_cuda_cluster.py	78.30% <80.00%> (+0.41%)	⬆️
dask_cuda/proxify_device_objects.py	95.45% <80.00%> (+6.56%)	⬆️
... and 23 more

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[pentschev]

LGTM, thanks @galipremsagar !

[pentschev]

@gpucibot merge

[pentschev]

I believe we need someone from ops to merge, could you please do that @ajschmidt8 ?

[galipremsagar]

@gpucibot merge