feat: ResignationSerializer create bug2

apps/hrm/serializers.py

@@ -327,6 +327,10 @@ class ResignationSerializer(CustomModelSerializer):
         model = Resignation
         fields = '__all__'
     
+    def update(self, instance, validated_data):
+        validated_data.pop('employee')
+        return super().update(instance, validated_data)
+    
     def create(self, validated_data):
         employee:Employee = validated_data['employee']
         if employee.job_state == Employee.JOB_ON: