[5.4] Return the insertId of released jobs

[weotch]

The InteractsWithQueue trait returns the response from $this->job->release($delay); in it's release() and the DatabaseQueue class returns the inserted id from it's release() method. This allows the inserted id to flow back to a job that manually calls release().

My use case involves wanting to release a job back onto the queue without incrementing it's attempts count. I would use this to manually query the jobs table and decrement the attempts after calling release().

One issue I see with this proposal is that the Job contract describes the release() response as being void, which is violated by this change.

[taylorotwell]

Can you update the contract return type?