chore: add dependabot for 4.0.x maintenance branch

[gnodet]

Summary

• Add maven and github-actions dependabot entries for the 4.0.x maintenance branch
• Matches the existing configuration for master and jline-3.x

Summary by CodeRabbit

• Chores
  • Updated dependency management configuration to check for updates daily across Maven and GitHub Actions ecosystems on the 4.0.x release branch.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 4c567633-27cf-49cf-9c8d-0b8775f89217

📥 Commits

Reviewing files that changed from the base of the PR and between cd339eb and 02212f4.

📒 Files selected for processing (1)

• .github/dependabot.yml

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📝 Walkthrough

Walkthrough

This pull request adds two new Dependabot update entries to the .github/dependabot.yml configuration file. The changes enable automated dependency scanning and updates for Maven packages and GitHub Actions, both targeting the 4.0.x branch with daily check intervals.

Changes

Cohort / File(s)	Summary
Dependabot Configuration .github/dependabot.yml	Added Maven ecosystem and GitHub Actions package manager entries, both set to scan the root directory daily and target the 4.0.x branch for dependency updates.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 Dependabot hops with glee,
Maven and Actions wild and free,
Daily updates, fresh and clean,
The 4.0.x branch, pristine!
No more stale deps, no more fuss,
Automation now rides the bus! 🚀

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding Dependabot configuration for the 4.0.x maintenance branch.
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
• Commit unit tests in branch add-dependabot-4.0.x

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud