keep a separate commit for release changelogs

[tzemanovic]

Describe your changes

This makes it easier to cherry-pick changelogs from maintenance releases into main

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 74.19%. Comparing base (3c423f9) to head (5a88ddc).
Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4350   +/-   ##
=======================================
  Coverage   74.18%   74.19%           
=======================================
  Files         345      345           
  Lines      110644   110644           
=======================================
+ Hits        82086    82087    +1     
+ Misses      28558    28557    -1     

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