consider using === in network blacklist matching

[Nakilon]

The String#match is doing funny things

irb(main):023:0> "vg?1".match "vg?1"
=> nil
irb(main):024:0> "g?1".match "g?1"
=> #<MatchData "1">

here https://github.com/rubycdp/ferrum/blob/7ae00e7ce557c765f9dfcd75b5875cdc1cc186dd/lib/ferrum/network/intercepted_request.rb#L33 and since you send regex on url and not vice versa, I believe it isn't intended. So I propose to make it like this instead:

      def match?(regexp)
        not not regexp === url
      end

because it was too surprising that when I added an exact url string it didn't match, such as "https://telegram.org/img/tgme/pattern.svg?1".

Have no time to come up with a PR, just patched in a fork.