fix: remove @semantic-release/git plugin to prevent protected branch push errors

[Copilot]

The frontend build workflow was failing with the error:

remote: error: GH006: Protected branch update failed for refs/heads/main.
remote: - Changes must be made through a pull request.
remote: - You're not authorized to push to this branch.
error: failed to push some refs to 'https://github.com/codecentric/llm-eval'

Root Cause

The issue occurred because:

1. The frontend.yaml workflow triggers on push to main branch
2. It calls frontend-build-and-push.yaml as a workflow_call
3. The build workflow runs semantic-release when conditions are met
4. Semantic-release was configured with @semantic-release/git plugin that commits and pushes changes back to the repository
5. The main branch is protected and doesn't allow direct pushes, causing the workflow to fail

Solution

Removed the @semantic-release/git plugin from /frontend/.releaserc.json while preserving all other semantic-release functionality:

• ✅ Commit analysis for version bumps
• ✅ Release notes generation
• ✅ Changelog generation
• ✅ GitHub releases
• ❌ Git commits/pushes (removed to fix protected branch error)

This minimal change (removing 7 lines) solves the protected branch push error while maintaining the essential semantic-release features. The workflow will now complete successfully without attempting to push commits back to the protected main branch.

Testing

• Semantic-release dry-run passes without errors
• Frontend linting and building work correctly
• Configuration loads all required plugins except the removed git plugin
• Simulated CI environment confirms semantic-release works properly

Fixes #45.

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[github-actions]

🎉 This PR is included in version 1.0.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 1.0.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀