upgrade cosmos sdk to v0.47.15

[miladz68]

Description

Reviewers checklist:

• Try to write more meaningful comments with clear actions to be taken.
• Nit-picking should be unblocking. Focus on core issues.

Authors checklist

• Provide a concise and meaningful description
• Review the code yourself first, before making the PR.
• Annotate your PR in places that require explanation.
• Think and try to split the PR to smaller PR if it is big.

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.61%. Comparing base (45f88ed) to head (99ca90e).
Report is 1 commits behind head on release-v4.

Additional details and impacted files

@@              Coverage Diff               @@
##           release-v4    #1054      +/-   ##
==============================================
+ Coverage       64.13%   66.61%   +2.48%     
==============================================
  Files             134      134              
  Lines           13076    13076              
==============================================
+ Hits             8386     8711     +325     
+ Misses           3965     3631     -334     
- Partials          725      734       +9     

Flag	Coverage Δ
coreum	58.34% <ø> (ø)
coreum-integration-tests-modules	50.38% <ø> (+5.66%)	⬆️

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[masihyeganeh]

Reviewed 7 of 7 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @dzmitryhil and @ysv)

[dzmitryhil]

Reviewed 7 of 7 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @ysv)