fix(ci): allow pushing Helm Chart release candidates

[keynslug]

Use simpler script to push Helm releases instead of dedicated action that unnecessarily enforces appVersion = version.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.64%. Comparing base (3b6be98) to head (9ab863f).
⚠️ Report is 3 commits behind head on main-2.3.

Additional details and impacted files

@@             Coverage Diff              @@
##           main-2.3    #1178      +/-   ##
============================================
- Coverage     76.73%   76.64%   -0.09%     
============================================
  Files            47       47              
  Lines          3537     3537              
============================================
- Hits           2714     2711       -3     
- Misses          685      686       +1     
- Partials        138      140       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.