core: fix username validator not allowing changes that can be done via flows

closes #2755

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/core/api/users.py

@@ -72,6 +72,7 @@ class UserSerializer(ModelSerializer):
     )
     groups_obj = ListSerializer(child=GroupSerializer(), read_only=True, source="ak_groups")
     uid = CharField(read_only=True)
+    username = CharField(max_length=150)
 
     class Meta:
 

schema.yml

@@ -28395,9 +28395,6 @@ components:
         username:
           type: string
           minLength: 1
-          description: Required. 150 characters or fewer. Letters, digits and @/./+/-/_
-            only.
-          pattern: ^[\w.@+-]+$
           maxLength: 150
         name:
           type: string
@@ -30942,9 +30939,6 @@ components:
           title: ID
         username:
           type: string
-          description: Required. 150 characters or fewer. Letters, digits and @/./+/-/_
-            only.
-          pattern: ^[\w.@+-]+$
           maxLength: 150
         name:
           type: string
@@ -31254,9 +31248,6 @@ components:
         username:
           type: string
           minLength: 1
-          description: Required. 150 characters or fewer. Letters, digits and @/./+/-/_
-            only.
-          pattern: ^[\w.@+-]+$
           maxLength: 150
         name:
           type: string