Add bundler/Ruby dependencies to Renovate configuration

[joselsegura]

Summary

• Add packageRule for bundler manager to handle Ruby/Jekyll dependencies
• Ensures Ruby gem updates (like github-pages, jekyll-feed, etc.) are automatically grouped and merged by MintMaker
• Matches the same automerge configuration pattern as Python, Go, pre-commit hooks, and GitHub Actions

Why

Currently, Ruby dependencies in downstream repos like insights-behavioral-spec are not configured in Renovate, so MintMaker creates PRs but they don't get auto-merged. This change will sync to all downstream repos via the repo-sync workflow.

Test plan

• Verify renovate.json is valid JSON
• Confirm this syncs to downstream repos via processing-tools repo-sync workflow
• Verify future MintMaker PRs for bundler updates get auto-merged in downstream repos

🤖 Generated with Claude Code

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: c40682d7-1dac-43c2-b898-98b3a508ad3e

📥 Commits

Reviewing files that changed from the base of the PR and between 627aeb9 and 61e8665.

📒 Files selected for processing (1)

• renovate.json

---

Summary by CodeRabbit

• Chores
  • Streamlined Ruby dependency management by configuring automatic merging for Ruby-related package updates.

Walkthrough

A new Renovate package rule was added to renovate.json that targets bundler managers, grouping Ruby dependencies with automerge enabled while keeping major/minor versions together. No other configuration entries were modified.

Changes

Cohort / File(s)	Summary
Renovate Configuration renovate.json	Added bundler manager rule grouping Ruby dependencies with automerge and platformAutomerge enabled.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding a bundler/Ruby dependencies configuration to Renovate, which matches the file modification in renovate.json.
Description check	✅ Passed	The description is directly related to the changeset, explaining the purpose of adding the bundler manager configuration, why it's needed, and providing a test plan.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}