feat: update SDK to fork with expedited proposals

[faultytolly]

Description

This PR updates the cosmos-sdk to use a fork with expedited proposals.
It also adds an upgrade handler to handle the migration.

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Type of change

Please check the options that are relevant. This PR introduces

• Patch: Bug fix (non-breaking change which fixes an existing issue)
• Minor: New feature (non-breaking change which adds new functionality)
• Major: Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Features Description

• NA

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Test Cases

• NA

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Documentation

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Checklist:

• I have added change type (major|minor|patch) in the PR
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2e80f0f) 13.73% compared to head (3bf00df) 13.73%.
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #296   +/-   ##
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  Coverage   13.73%   13.73%           
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  Files         272      272           
  Lines       32459    32459           
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  Hits         4458     4458           
  Misses      27609    27609           
  Partials      392      392           

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