Log Message:
devel/ruby-activesupport60: update to 6.0.3

Update ruby-activesupport60 to 6.0.3.

## Rails 6.0.3 (May 06, 2020) ##

*   `Array#to_sentence` no longer returns a frozen string.

    Before:

        ['one', 'two'].to_sentence.frozen?
        # => true

    After:

        ['one', 'two'].to_sentence.frozen?
        # => false

    *Nicolas Dular*

*   Update `ActiveSupport::Messages::Metadata#fresh?` to work for cookies with \ 
expiry set when
    `ActiveSupport.parse_json_times = true`.

    *Christian Gregg*