Password credential flow access token request breaks between Keyrock 7.8 and Keyrock 7.9

[wseis]

I am using keyrock for IdM. I first used the Dockerfile provided at Docker Hub, for a fist implementation. Then I noticed that it still uses Keyrock 7.6.0. I wanted to update to the "latest" version, but the the password creadential flow did not work anymore after the update. I tried the different version of Keyrock by adapting the Docker-Compose file. The break happens between 7.8 and 7.9.

I described the problem also at StackOverflow:

https://stackoverflow.com/questions/75508391/fiware-keyrock-identity-management,

where you can also see the python request I've sent.