[COMPONENTS] Migrate Copper components to use access token instead of API Keys

Is there a specific app this action is for? Copper https://pipedream.com/apps/copper

Please provide a link to the relevant API docs for the specific service / operation. https://developer.copper.com/index.html

Additional context Copper supports the OAuth 2.0 authentication method and the Pipedream app for Copper has been migrated to use it. Need to update Copper app file so that the the access token is used to access the API endpoints required by components. The $auth variable now features the oauth_access_token property for the access token.