Bump AWSSDK.Core from 4.0.0.26 to 4.0.3.3

[sankettangade]

Bumping AWSSDK.Core from 4.0.0.26 to 4.0.3.3.
Recreated this PR as it had unwanted commits - #994

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.15%. Comparing base (5dfc50d) to head (fb55ed7).
⚠️ Report is 3 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #995   +/-   ##
=======================================
  Coverage   62.15%   62.15%           
=======================================
  Files         294      294           
  Lines       10813    10813           
  Branches     1615     1615           
=======================================
  Hits         6721     6721           
  Misses       3491     3491           
  Partials      601      601           

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