Update Crucible and Propolis (#4282)

Propolis changes:
PHD: refactor & add support Propolis server "environments" (#547) Begin
making Accessor interface more robust
Update Crucible and Omicron deps for Hakari fixes
Add cloud-init volume generation to standalone
Use specified toolchain version for all GHA checks Use params to
configure rust-toolchain in GHA
Update and lock GHA dependencies

Crucible changes:
Use regions_dataset path for apply_smf (#1000)
Don't unwrap when we can't create a dataset (#992) Fix tests and update
log messages. (#995)
Better backpressure (#990)
Update Rust crate proptest to 1.3.1 (#977)
Read only downstairs can skip Live Repair (#984)
Update Rust crate expectorate to 1.1.0 (#975)
Add trait for `ExtentInner` (#982)
report backpressure in upstairs_info dtrace probe (#987) Support
multiple downstairs operations in GtoS (#985)

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