We were using an optional parameter followed by keyword parameters,
which caused a warning with Ruby 2.7:
```
app/components/shared/link_list_component.rb:20: warning: Using the last
argument as keyword parameters is deprecated; maybe ** should be added
to the call
```
I've tried to make `current:` a named parameter as well and then change
all method calls to `link_list`, but was still getting the same warning.
Might have something to do with the fact that we're dealing with arrays
with hashes inside them instead of passing the keyword arguments
directly to the method.
a75a2894ce