FedEx Plugin is not Tracing the rates response

[RomanovM]

nopCommerce version: 4.80

Steps to reproduce the problem:
In the FedEx plugin, select the Tracing checkbox.
Go through checkout up until you see the shipping methods/rates.
Go to System Log.

You will see messages, from bottom up. (or do SQL query order by Id)

FedEx rates. Request: Method: POST, RequestUri: 'https://apis.fedex.com/oauth/token' ....

FedEx rates. Response: StatusCode: 200, ... Content: {"access_token":"...

FedEx rates. Request: Method: POST, RequestUri: 'https://apis.fedex.com/rate/v1/rates/quotes', ...

There is no logged message for the response to the rate request.

See related / fixed in the UPS plugin
https://github.com/nopsolutions/nopcommerce/issues/7356

Source: nopSolutions/nopCommerce#7611