Regular expression denial of service in ActiveRecord's PostgreSQL Money type

Hello team! The regular expressions used in the [Money](https://github.com/rails/rails/blob/ddd0e9b/activerecord/lib/active_record/connection_adapters/postgresql/oid/money.rb#L29) type to convert strings like `-$100,000.00` to `100000` have an execution time with a quadratic growth proportional to …

            case value
            when /^-?\D*[\d,]+\.\d{2}$/  # (1)
              value.gsub!(/[^-\d.]/, "")
            when /^-?\D*[\d.]+,\d{2}$/  # (2)
              value.gsub!(/[^-\d,]/, "").sub!(/,/, ".")
            end