🐛 400 when modifying a user with a space in username

[CChemin]

To reproduce :

Create a user with a space in its username "example "
Modify it via a PUT request
You should get a 400 "Path id exaple doesn't match with body id example "

because the url is trimmed from the ending space

This username should be accepted and the request go well instead

[CChemin]

It would be even better to add a feature that checks that there is no space at the end of a username when creating the user