upgrade ruby and bundler version

[sensuikan1973]

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[gemini-code-assist]

Code Review

This pull request updates the Ruby version in the .ruby-version file from 4.0.3 to 4.0.4. The reviewer identified that 4.0.4 is not a recognized stable release and suggested 3.4.1 as the intended version, while also noting the absence of Gemfile.lock changes for the referenced bundler upgrade.

[gemini-code-assist]

The Ruby version 4.0.4 is not a recognized stable release; the current stable versions are in the 3.x series. Given the compatibility gems added to macos/Gemfile (such as abbrev, mutex_m, and ostruct), it is highly probable that 3.4.1 was the intended version. Additionally, the pull request title mentions a bundler version upgrade, but no changes to the Gemfile.lock (where the bundler version is typically locked) are included in this diff.

3.4.1

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.13%. Comparing base (74cfb0f) to head (b305760).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2929   +/-   ##
=======================================
  Coverage   94.13%   94.13%           
=======================================
  Files          52       52           
  Lines        1483     1483           
=======================================
  Hits         1396     1396           
  Misses         87       87           

Flag	Coverage Δ
integration_test	65.00% <ø> (ø)
macos-latest	93.05% <ø> (ø)
ubuntu	93.59% <ø> (ø)
widget_test	90.28% <ø> (ø)
windows	93.45% <ø> (ø)

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