fix(mssql): when updating an object by id, omit the id itself

It is a useless update and id is an identity column in MSSQL,
which is not updatable and throws an error if you try.

This affects the following seven objects (Models):
- Category
- CustomFilter
- Group
- Project
- Subtask
- TaskExternalLink
- User

app/Model/UserModel.php

@@ -290,7 +290,9 @@ class UserModel extends Base
     public function update(array $values)
     {
         $this->prepare($values);
-        $result = $this->db->table(self::TABLE)->eq('id', $values['id'])->update($values);
+        $updates = $values;
+        unset($updates['id']);
+        $result = $this->db->table(self::TABLE)->eq('id', $values['id'])->update($updates);
         $this->userSession->refresh($values['id']);
         return $result;
     }