Update continuous integration and experimental ruby builds

[jcouball]

Update continuous integration and experimental Ruby builds making the following changes:

• Change supported platforms / Ruby versions

  • Continuous integration platforms / Ruby versions:
    • Ubuntu: MRI (3.1, 3.2, 3.3), TruffleRuby (24), JRuby (9.4)
    • Windows: MRI (3.1), JRuby (9.4)
  • Experimental platforms / Ruby versions:
    • Ubuntu: MRI (head), TruffleRuby (head), JRuby (head)
    • Windows: MRI (head), JRuby (head)

• Update continuous integration and experimental ruby builds to use the same workflow for all projects (including possibly renaming the workflow file name and name)

• Update the minimally required Ruby in the project’s gemspec and .rubocop.yml

• Update dependencies to latest

• Auto correct new Rubocop offenses

[codeclimate]

Code Climate has analyzed commit 27634ca and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 100.0% (0.0% change).

View more on Code Climate.

[jcouball]

I will address these build errors for Windows, JRuby, and TruffleRuby in a later PR.