ci: update Spark job Ruby from 3.2 to 3.3

[aguynamedryan]

Summary

• Update ruby/setup-ruby version from 3.2 to 3.3 in the Run-Spark-Tests CI job
• PostgreSQL Docker job is unaffected (uses Docker image Ruby)

Test plan

• CI should pass with Ruby 3.3

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated testing infrastructure to use Ruby 3.3.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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Walkthrough

Ruby version updated from 3.2 to 3.3 in the GitHub Actions workflow configuration for the Run-Spark-Tests job. No control flow or step logic modifications are present.

Changes

Cohort / File(s)	Summary
GitHub Actions Configuration .github/workflows/run_tests.yml	Ruby version dependency updated from 3.2 to 3.3 in the Setup Ruby step.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and concisely describes the main change: updating Ruby from 3.2 to 3.3 in the Spark CI job.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch ruby-3.3-upgrade

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