Add automated release workflow for RubyGems publishing

[ahogappa]

What

Automate gem releases to RubyGems when a new version tag is pushed.

Goal

When a version tag (e.g., v1.0.0) is pushed to GitHub, the gem should be automatically built and published to RubyGems without manual intervention.

Approach

Create a GitHub Actions workflow that triggers on tag pushes and publishes the gem using RubyGems API credentials stored as a repository secret.

[coderabbitai]

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Examples

• Example 1
• Example 2

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issue_enrichment:
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    enabled: false

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