Set type of permission constraint to raw (#1374)

* Set type of permission constraint to raw

According to https://netboxlabs.com/docs/netbox/en/stable/administration/permissions/,
constraints can be either a dictionary or a list of dictionaries. The
only way to represent this in Ansible is with the `raw` type.

* Update doc block

plugins/modules/netbox_permission.py

@@ -58,7 +58,7 @@
         description:
           - The constraints of the permission to be created
         required: false
-        type: dict
+        type: raw
     required: true
 """
 
@@ -169,7 +169,7 @@ def main():
                     enabled=dict(required=False, type="bool"),
                     actions=dict(required=False, type="list", elements="raw"),
                     object_types=dict(required=False, type="list", elements="raw"),
-                    constraints=dict(required=False, type="dict"),
+                    constraints=dict(required=False, type="raw"),
                 ),
             ),
         )