I noticed a similar post couple of years back. Not sure if there has been any update on the features with regards to this use case. This is the post - There currently is no mechanism to secure data in an HTTP request. If you put sensitive information in the headers, like secrets and tokens, it will be output to the logs
I went ahead and created an idea just in case - https://ideas.sailpoint.com/ideas/GOV-I-4173
Thanks,
Sreejith