updates to publish to crates.io (backport #4312)

[mergify]

Describe your changes

• remove unused borsh-ext dep declaration (replaced in inline the borsh-ext fn in core (backport #4177) #4179)
• specify version for internal dependencies
• declare internal dependencies via workspace
• change cargo-release config to allow publishing

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:

---

This is an automatic backport of pull request #4312 done by [Mergify](https://mergify.com).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.19%. Comparing base (4136a6f) to head (37ccfdb).
Report is 9 commits behind head on maint-libs-0.47.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           maint-libs-0.47    #4331      +/-   ##
===================================================
- Coverage            74.20%   74.19%   -0.02%     
===================================================
  Files                  345      345              
  Lines               110677   110677              
===================================================
- Hits                 82132    82118      -14     
- Misses               28545    28559      +14     

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