Bump sdk version to v0.43.0-rc2

[dongsam]

Description

closes: #31

Bullet Points

• Bump sdk version to v0.43.0-rc2 from rc1

References

• sdk diff

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• Appropriate labels applied
• Targeted PR against correct branch
• 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
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #36 (c12a882) into master (e06ecb9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #36   +/-   ##
=======================================
  Coverage   36.87%   36.87%           
=======================================
  Files          23       23           
  Lines        1413     1413           
=======================================
  Hits          521      521           
  Misses        846      846           
  Partials       46       46           

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