refactor: remove x/foundation UpdateValidatorAuthsProposal

[0Tech]

Description

This patch removes UpdateValidatorAuthsProposal of x/foundation which extends x/gov proposal. As a result, granter is no more in use, because x/foundation would be the only granter.

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.
• I have updated API documentation client/docs/swagger-ui/swagger.yaml

[codecov]

Codecov Report

Merging #685 (ea86fbe) into main (fcaf1c5) will decrease coverage by 0.06%.
The diff coverage is 85.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #685      +/-   ##
==========================================
- Coverage   61.11%   61.04%   -0.07%     
==========================================
  Files         873      873              
  Lines       98602    98429     -173     
==========================================
- Hits        60260    60088     -172     
- Misses      34736    34742       +6     
+ Partials     3606     3599       -7     

Impacted Files	Coverage Δ
simapp/app.go	86.14% <ø> (ø)
x/foundation/client/testutil/suite.go	97.90% <ø> (-0.02%)	⬇️
x/foundation/client/testutil/tx.go	99.24% <ø> (-0.09%)	⬇️
x/foundation/codec.go	0.00% <ø> (ø)
x/foundation/keeper/grpc_query.go	4.27% <0.00%> (ø)
x/foundation/keeper/handler.go	10.00% <ø> (-48.34%)	⬇️
x/foundation/keeper/proposal.go	65.49% <ø> (-4.82%)	⬇️
x/foundation/proposal.go	75.00% <ø> (+7.20%)	⬆️
x/foundation/keeper/keeper.go	83.33% <50.00%> (ø)
x/foundation/keeper/msg_server.go	74.50% <66.66%> (-1.42%)	⬇️
... and 12 more

[zemyblue]

If this patch is applied, the already launched chain should be reset. Is it right?

[0Tech]

If this patch is applied, the already launched chain should be reset. Is it right?

Of course, yes, because it affects the state.