Update cosmos-sdk version to v0.42.4

[dongsam]

Description

closes: #219

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Before we can merge this PR, please make sure that all the following items have been
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write a little note why.

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #220 (6986829) into develop (df341a7) will not change coverage.
The diff coverage is n/a.

❗ Current head 6986829 differs from pull request most recent head 6f14132. Consider uploading reports for the commit 6f14132 to get more accurate results

@@           Coverage Diff            @@
##           develop     #220   +/-   ##
========================================
  Coverage    83.43%   83.43%           
========================================
  Files           20       20           
  Lines         2349     2349           
========================================
  Hits          1960     1960           
  Misses         209      209           
  Partials       180      180           

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