Use AR Arel table to type cast booleans in order to avoid deprecation…

… warning

```
DEPRECATION WARNING: Passing a column to `quote` has been deprecated. It
is only used for type casting, which should be handled elsewhere.
```

lib/statesman/adapters/active_record.rb

@@ -305,19 +305,11 @@ def mysql_gaplock_protection?
       end
 
       def db_true
-        value = ::ActiveRecord::Base.connection.type_cast(
-          true,
-          transition_class.columns_hash["most_recent"],
-        )
-        ::ActiveRecord::Base.connection.quote(value)
+        Arel::Nodes::Quoted.new(true).to_sql
       end
 
       def db_false
-        value = ::ActiveRecord::Base.connection.type_cast(
-          false,
-          transition_class.columns_hash["most_recent"],
-        )
-        ::ActiveRecord::Base.connection.quote(value)
+        Arel::Nodes::Quoted.new(false).to_sql
       end
 
       def db_null