Rescue HTTP::URI::InvalidError

With the v6 http gem changes, this exception changed. So, for this
gem, we rescue both the v5 exception and the v6 exception and raise
the exception namespaced to this gem.

Author: jgarber623

lib/indieweb/endpoints/client.rb

@@ -13,7 +13,7 @@ class Client
       # @raise [InvalidURIError]
       def initialize(url)
         @uri = HTTP::URI.parse(url)
-      rescue Addressable::URI::InvalidURIError => e
+      rescue Addressable::URI::InvalidURIError, HTTP::URI::InvalidError => e
         raise InvalidURIError, e
       end