Update Rust crate rayon to 1.8.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
rayon	dependencies	patch	1.8.0 -> 1.8.1

---

Release Notes

rayon-rs/rayon (rayon)

v1.8.1

Compare Source

• The new "web_spin_lock" crate feature makes mutexes spin on the main
  browser thread in WebAssembly, rather than suffer an error about forbidden
  atomics.wait if they were to block in that context. Thanks @​RReverser!

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.

[github-actions]

Benchmark for 3e8cbc6

Click to view benchmark

Test	Base	PR	%
Reclass::inventory() multi-threaded	1542.6±89.09µs	1567.0±130.75µs	+1.58%
Reclass::inventory() single-threaded	3.5±0.06ms	3.5±0.15ms	0.00%