Update GitHub Actions dependencies (#437) · nmshd/backbone@a7eab97

Non-nullable property 'MetricKey' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Owner' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Non-nullable property 'Owner' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.