build: bump cosmos-sdk to v0.44.5

[dongsam]

Description

closes: #468

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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 #469 (1db7a45) into develop (7da7fb8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #469   +/-   ##
========================================
  Coverage    85.49%   85.49%           
========================================
  Files           23       23           
  Lines         2634     2634           
========================================
  Hits          2252     2252           
  Misses         221      221           
  Partials       161      161           

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