Update Omicron to latest propolis with InstanceSerialConsoleHelper (#3391)

Update Omicron to get newer Crucible and Propolis, which also includes
the changes to support the new Propolis `InstanceSerialConsoleHelper`.

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Co-authored-by: Alan Hanson <alan@oxide.computer>
Co-authored-by: Rain <rain@oxide.computer>

Author: 3 people