DEV: Fix methods removed in Ruby 3.2 (#15459)

* File.exists? is deprecated and removed in Ruby 3.2 in favor of
File.exist?
* Dir.exists? is deprecated and removed in Ruby 3.2 in favor of
Dir.exist?

app/models/global_setting.rb

@@ -267,7 +267,7 @@ class GlobalSetting
   class FileProvider < BaseProvider
     attr_reader :data
     def self.from(file)
-      if File.exists?(file)
+      if File.exist?(file)
         parse(file)
       end
     end