fix: remove '@semantic-release/exec plugin' (avoids extra npm install)

[rosygmiki]

This PR removes @semantic-release/exec plugin removing the need for a package.json file which would include npm dependencies that the project doesn't otherwise use.

release.yml now runs on release: published instead of gh workflow run trigger from @semantic-release/exec.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.51%. Comparing base (4085a78) to head (d77abb3).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #74   +/-   ##
=======================================
  Coverage   59.51%   59.51%           
=======================================
  Files          10       10           
  Lines        1035     1035           
=======================================
  Hits          616      616           
  Misses        305      305           
  Partials      114      114           

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[gemini-code-assist]

Code Review

This pull request updates the .releaserc.yml file by removing the @semantic-release/exec plugin, which was previously used to manually trigger the release.yml workflow via the GitHub CLI. I have no feedback to provide.

[semanticreleasebot-rmiki]

🎉 This PR is included in version 0.4.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀