build: use sdk v0.46.7-regen and register amino

[ryanchristo]

Description

Ref: regen-network/cosmos-sdk#49

This pull request updates to the forked version of v0.46.7 (v0.46.7-regen-1), which includes gov and group amino support.

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Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[codecov]

Codecov Report

Merging #1694 (a5c0c81) into main (3f7a601) will increase coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1694      +/-   ##
==========================================
+ Coverage   72.80%   72.81%   +0.01%     
==========================================
  Files         228      228              
  Lines       13600    13608       +8     
==========================================
+ Hits         9901     9909       +8     
  Misses       2967     2967              
  Partials      732      732              

Impacted Files	Coverage Δ
x/ecocredit/base/types/v1/codec.go	100.00% <100.00%> (ø)
x/ecocredit/basket/types/v1/codec.go	100.00% <100.00%> (ø)
x/ecocredit/marketplace/types/v1/codec.go	100.00% <100.00%> (ø)
x/intertx/types/v1/codec.go	100.00% <100.00%> (ø)

[aleem1314]

Lgtm