Fix broken company list fetch

Fetching companies from a paginated list is currently broken.

The issue is described here in more detail: HubSpot#324

This commit implements the fix suggested there while we await a fix on the official gem.

The other strategy i considered here was switching to use the V1 API as we already do that for a contacts list in Charlie, as that would bypass the broken code. However according to

https://legacydocs.hubspot.com/docs/methods/lists/get_list_contacts

there is no v1 API for company based lists...

lib/hubspot/codegen/crm/lists/models/collection_response_long.rb

@@ -39,7 +39,7 @@ def self.acceptable_attributes
         def self.openapi_types
           {
             :'paging' => :'Paging',
-            :'results' => :'Array<Integer>'
+            :'results' => :'Array<Hash<String, String>>',
           }
         end