bug: can not issue credentials of bcovrin test

Problem to solve

You cant issue credential on bcovrin test network. There is no thrown error, simple an empty object returned.

Proposal

1. Update dependencies to hard 0.4.0 version of AFJ, we are currently using an alpha. If this doesnt work update afj until it works, but use specific versions not *.
2. Remove debug logs
3. Add TAA acceptance