Supports CI to ruby 3.1, 3.2 and 3.3

[taylorrf]

• Drops support of Ruby 2.7 (Ended 1 year and 2 months ago (31 Mar 2023))
• Drops support of Ruby 3.0 (Ended 1 month and 2 weeks ago (23 Apr 2024))

Adds support to:

• Ruby 3.1;
• Ruby 3.2;
• Ruby 3.3;

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.51%. Comparing base (68930cc) to head (0626846).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #135   +/-   ##
=======================================
  Coverage   97.51%   97.51%           
=======================================
  Files          50       50           
  Lines        1125     1125           
=======================================
  Hits         1097     1097           
  Misses         28       28           

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