Suppress a new RuboCop offense

This commit suppresses the following new RuboCop offense:

```console
$ bundle exec rubocop
(snip)

lib/rubocop/cop/performance/uri_default_parser.rb:28:11: C: [Correctable] Style/RedundantReturn: Redundant return detected.
          return unless uri_parser_new?(node) do |captured_value|
          ^^^^^^
```

lib/rubocop/cop/performance/uri_default_parser.rb

@@ -25,7 +25,7 @@ class UriDefaultParser < Base
         PATTERN
 
         def on_send(node)
-          return unless uri_parser_new?(node) do |captured_value|
+          uri_parser_new?(node) do |captured_value|
             double_colon = captured_value ? '::' : ''
             message = format(MSG, double_colon: double_colon)