Hubspot OAuth2 Credentials: Use granular scopes

[that-one-tom]

This PR addresses the issue reported here in the community forum: Currently, new users trying to authenticate with Hubspot will see an error message Insufficient scopes were provided. Please contact the app developer coming from Hubspot. This appears to be caused by n8n requesting a contacts scope (which while documented is no longer available to new apps).

Note: The scopes selected in the respective Hubspot app's Auth settings need to match the scopes requested by n8n (oauth needs to be selected separately):

⚠️ This is most likely a breaking change for existing users of the Hubspot Trigger node/Hubspot Developer API credentials. These users would need to:

1. Update their Hubspot app to use the scopes from the above screenshot (oauth, crm.objects.contacts.read, crm.schemas.contacts.read, crm.objects.companies.read, crm.objects.deals.read, crm.schemas.companies.read, crm.schemas.deals.read).
2. Reconnect their Hubspot account.