Update Ruby 3.4.7 → 3.4.9

[depfu]

Here is everything you need to know about this upgrade. Please take a good look at what changed and the test results before merging this pull request.

What changed?

Release Notes

3.4.9

Posted by nagachika on 11 Mar 2026

      <p>Ruby 3.4.9 has been released.</p>

This release includes an update to the zlib gem addressing CVE-2026-27820, along with other bug fixes. Please see the GitHub releases for further details.

We recommend updating your version of the zlib gem. This release has been made for the convenience of those who wish to continue using it as a default gem.

3.4.8

Posted by k0kubun on 17 Dec 2025

Ruby 3.4.8 has been released.

This is a routine update that includes bug fixes. Please refer to the release notes on GitHub for further details.

Release Schedule

We intend to release the latest stable Ruby version (currently Ruby 3.4) every two months following the most recent release. Ruby 3.4.9 is scheduled for February.

If a change arises that significantly affects users, a release may occur earlier than planned, and the subsequent schedule may shift accordingly.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.00%. Comparing base (c693ce4) to head (55607e5).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #878   +/-   ##
========================================
  Coverage    98.00%   98.00%           
========================================
  Files           78       78           
  Lines         1755     1755           
========================================
  Hits          1720     1720           
  Misses          35       35           

Flag	Coverage Δ
pull_request	98.00% <ø> (ø)
push	98.00% <ø> (ø)
ruby	98.00% <ø> (ø)

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[depfu]

Closed in favor of #928.