Update the logic to check for accumulation steps with deepspeed

[rohitgr7]

What does this PR do?

Just like IPUs, deepspeed do support dict values and GradAccumScheduler for gradient accumulation.

Does your PR introduce any breaking changes? If yes, please list them.

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[github-actions]

Build Error! No Linked Issue found. Please link an issue or mention it in the body using #<issue_id>

[codecov]

Codecov Report

Merging #9826 (86a0bcf) into master (9e621b4) will decrease coverage by 0%.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #9826   +/-   ##
======================================
- Coverage      93%     93%   -0%     
======================================
  Files         177     178    +1     
  Lines       15527   15584   +57     
======================================
+ Hits        14386   14431   +45     
- Misses       1141    1153   +12     

[SeanNaren]

Thanks @rohitgr7

[tchaton]

LGTM !