Add logger as runtime dependency

[quanghuynguyen1902]

Pull Request: Add logger dependency for Ruby 3.5.0 compatibility

Resolves #9763 by adding logger ~> 1.4 as runtime dependency to prevent Ruby 3.5.0 compatibility warnings

This is a 🐛 bug fix.

Summary

Adds logger ~> 1.4 as a runtime dependency to prevent Ruby 3.5.0 compatibility warnings that appear when using Jekyll with Ruby 3.4+.

Changes:

• Added s.add_runtime_dependency("logger", "~> 1.4") to jekyll.gemspec
• Eliminates the warning: "logger was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0"

Testing:

• Verified with Ruby 3.4.4 that the warning no longer appears
• Jekyll functions normally with the explicit logger dependency

[ashmaroli]

Thank you for submitting this pull request, @quanghuynguyen1902 but unfortunately, this change may not be in Jekyll itself.

I believe Jekyll's dependency gem 'mercenary' would be the ideal library to have this change.

[taketo1113]

Since Jekyll itself also directly uses require "logger", it might make sense to add logger as a runtime dependency to the jekyll gem as well.
@ashmaroli Would this be acceptable?

jekyll/lib/jekyll.rb

Line 26 in 1f319fb

require "logger"