Updates masp gas limit in genesis files

[grarco]

Describe your changes

Updates the masp_fee_payment_gas_limit in the genesis files to match the one proposed for mainnet.

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.26%. Comparing base (47fc912) to head (d3c6579).
Report is 15 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4044   +/-   ##
=======================================
  Coverage   74.25%   74.26%           
=======================================
  Files         341      341           
  Lines      107271   107271           
=======================================
+ Hits        79651    79660    +9     
+ Misses      27620    27611    -9     

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