build(deps): bump actions-rust-lang/setup-rust-toolchain from 1.8.0 to 1.9.0 #189

Job	Run time
test (ubuntu-latest, 26.3, false)	39s
test (ubuntu-latest, 27.2, false)	39s
test (ubuntu-latest, 28.2, false)	39s
test (ubuntu-latest, 29.3, false)	47s
test (macos-latest, 28.2, false)	1m 29s
test (macos-latest, 29.3, false)	1m 41s
test (windows-latest, 26.3, false)	2m 25s
test (windows-latest, 27.2, false)	1m 11s
test (windows-latest, 28.2, false)	46s
test (windows-latest, 29.3, false)	50s
test (ubuntu-latest, snapshot, true)	30s
test (macos-latest, snapshot, true)	1m 17s
test (windows-latest, snapshot, true)	40s
	13m 33s

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