chore: update cosmos-sdk to fix refundStake issue

[j75689]

Description

update cosmos-sdk to fix refundStake issue

Rationale

https://github.com/bnb-chain/bnc-cosmos-sdk/pull/378/files
https://github.com/bnb-chain/bnc-cosmos-sdk/pull/379/files

Example

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Changes

Notable changes:

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Preflight checks

• build passed (make build)
• tests passed (make test)
• integration tests passed (make integration_test)
• manual transaction test passed (cli invoke)

Already reviewed by

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Related issues

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ea088e2) 48.78% compared to head (f7294b2) 48.80%.

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Additional details and impacted files

@@              Coverage Diff              @@
##           bc-fusion    #1000      +/-   ##
=============================================
+ Coverage      48.78%   48.80%   +0.01%     
=============================================
  Files            127      127              
  Lines          12811    12811              
=============================================
+ Hits            6250     6252       +2     
+ Misses          6130     6127       -3     
- Partials         431      432       +1     

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