[DEVOPS-1785] Change ruby publish workflow to use api key method

[michalchecinski]

Type of change

- [x] Bug fix
- [ ] New feature development
- [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [x] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

Code changes

• .github/workflows/publish-ruby.yml: Use gem push with rubygem API key instead of automated release steps.

Before you submit

• Please add unit tests where it makes sense to do so

[bitwarden-bot]

Checkmarx One – Scan Summary & Details – 3e5d2fb2-b994-46d1-a740-4dc182bcc532

New Issues

Severity	Issue	Source File / Package	Checkmarx Insight
	Unpinned Actions Full Length Commit SHA	/publish-ruby.yml: 117	Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.40%. Comparing base (27ec020) to head (3004838).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #629   +/-   ##
=======================================
  Coverage   59.40%   59.40%           
=======================================
  Files         171      171           
  Lines       10345    10345           
=======================================
  Hits         6145     6145           
  Misses       4200     4200           

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