Fixup enum schema methods' signature to accept kwargs

As of Ruby 3.0, `def method_name(*)` doesn't accept kwargs.

Author: kamipo

activerecord/lib/active_record/connection_adapters/abstract_adapter.rb

@@ -576,23 +576,23 @@ def enable_extension(name, **)
       end
 
       # This is meant to be implemented by the adapters that support custom enum types
-      def create_enum(*) # :nodoc:
+      def create_enum(...) # :nodoc:
       end
 
       # This is meant to be implemented by the adapters that support custom enum types
-      def drop_enum(*) # :nodoc:
+      def drop_enum(...) # :nodoc:
       end
 
       # This is meant to be implemented by the adapters that support custom enum types
-      def rename_enum(*) # :nodoc:
+      def rename_enum(...) # :nodoc:
       end
 
       # This is meant to be implemented by the adapters that support custom enum types
-      def add_enum_value(*) # :nodoc:
+      def add_enum_value(...) # :nodoc:
       end
 
       # This is meant to be implemented by the adapters that support custom enum types
-      def rename_enum_value(*) # :nodoc:
+      def rename_enum_value(...) # :nodoc:
       end
 
       # This is meant to be implemented by the adapters that support virtual tables

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -575,14 +575,14 @@ def drop_enum(name, values = nil, **options)
       end
 
       # Rename an existing enum type to something else.
-      def rename_enum(name, options = {})
+      def rename_enum(name, **options)
         to = options.fetch(:to) { raise ArgumentError, ":to is required" }
 
         exec_query("ALTER TYPE #{quote_table_name(name)} RENAME TO #{to}").tap { reload_type_map }
       end
 
       # Add enum value to an existing enum type.
-      def add_enum_value(type_name, value, options = {})
+      def add_enum_value(type_name, value, **options)
         before, after = options.values_at(:before, :after)
         sql = +"ALTER TYPE #{quote_table_name(type_name)} ADD VALUE"
         sql << " IF NOT EXISTS" if options[:if_not_exists]
@@ -600,7 +600,7 @@ def add_enum_value(type_name, value, options = {})
       end
 
       # Rename enum value on an existing enum type.
-      def rename_enum_value(type_name, options = {})
+      def rename_enum_value(type_name, **options)
         unless database_version >= 10_00_00 # >= 10.0
           raise ArgumentError, "Renaming enum values is only supported in PostgreSQL 10 or later"
         end