Merge pull request rails#27228 from kamipo/follow_up_27126

Fix CI failure due to missing `Regexp#match?`

Author: kaspth

activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb

@@ -692,7 +692,7 @@ def initialize_type_map(m) # :nodoc:
 
       def register_integer_type(mapping, key, options) # :nodoc:
         mapping.register_type(key) do |sql_type|
-          if /\bunsigned\b/.match?(sql_type)
+          if /\bunsigned\b/ === sql_type
             Type::UnsignedInteger.new(options)
           else
             Type::Integer.new(options)

activerecord/lib/active_record/connection_adapters/mysql/column.rb

@@ -20,7 +20,7 @@ def blob_or_text_column?
         end
 
         def unsigned?
-          !/\A(?:enum|set)\b/.match?(sql_type) && /\bunsigned\b/.match?(sql_type)
+          /\A(?:enum|set)\b/ !~ sql_type && /\bunsigned\b/ === sql_type
         end
 
         def case_sensitive?