ci: only publish helm-chart once

[jooola]

Each file found with "release.extra_files" will become an artifact. Those artifacts cannot be filtered by "publishers[].ids". If the "release" step does not run (e.g. snapshot), the publishers will not have any artifacts to publish.

This make the "release.extra_files" glob pattern more strict, and ensure that the helm chart publisher only runs once, for the helm chart package.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.52%. Comparing base (8b99341) to head (576fd56).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1045   +/-   ##
=======================================
  Coverage   67.52%   67.52%           
=======================================
  Files          23       23           
  Lines        3249     3249           
=======================================
  Hits         2194     2194           
  Misses        885      885           
  Partials      170      170           

Flag	Coverage Δ
e2e	45.41% <ø> (ø)
unit	63.80% <ø> (ø)

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