feat: add update minCommissionRate to validators

[gsk967]

Description

This pull request contains the update staking minimum commission rate to all the validators whose validator commission rate below the minimum commission rate
closes: #1082

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[robert-zaremba]

• We also need to update params by setting a params.MinCommissionRate
• Let's move setMinimumCommissionRateToValidatros to another package and test it. I suggest app/upgrades/
• test SetMinimumCommissionRateToValidatros. Ideally we should test it using mocks and only the staking keeper.

[codecov-commenter]

Codecov Report

Merging #1379 (2f5a20b) into main (36e618b) will increase coverage by 0.49%.
The diff coverage is 96.10%.

@@            Coverage Diff             @@
##             main    #1379      +/-   ##
==========================================
+ Coverage   52.35%   52.84%   +0.49%     
==========================================
  Files          70       72       +2     
  Lines        6784     6861      +77     
==========================================
+ Hits         3552     3626      +74     
- Misses       2964     2966       +2     
- Partials      268      269       +1     

Impacted Files	Coverage Δ
app/upgrades/min_commission.go	85.71% <85.71%> (ø)
app/upgrades/test_util.go	100.00% <100.00%> (ø)

[robert-zaremba]

pre approving. Make sure that files not needed for the app have _test.go suffix.

Also - maybe we can rename this directory to upgradesv3? What do you think?

[gsk967]

pre approving. Make sure that files not needed for the app have _test.go suffix.

Also - maybe we can rename this directory to upgradesv3? What do you think?

How about we keep all v3 upgrade handlers related files inside app/upgrades/v3/

[robert-zaremba]

How about we keep all v3 upgrade handlers related files inside app/upgrades/v3/

I don't like import aliases, then you need to alias all imports, which is not really good. Also, this indicates as a v3 version of upgrades package.