Add release-plz to CI (#242) #561

Job	Run time
Check (stable)	17s
Rustfmt (stable)	9s
Miri	1m 24s
Test Suite (msrv)	6m 29s
Clippy (stable)	24s
Test Suite (msrv) (--no-default-features)	6m 19s
Test Suite (msrv) (--no-default-features --features auto-install)	6m 34s
Test Suite (msrv) (--no-default-features --features track-caller)	6m 20s
Test Suite (macOS-latest)	49s
Test Suite (windows-latest)	2m 20s
Test Suite (stable, --no-default-features)	54s
Test Suite (ubuntu-latest)	58s
Test Suite (stable, --features pyo3)	57s
Test Suite (beta, --no-default-features)	51s
Test Suite (stable)	1m 0s
Test Suite (beta)	56s
Test Suite (beta, --no-default-features --features track-caller)	54s
Test Suite (stable, --no-default-features --features auto-install)	48s
Test Suite (beta, --features pyo3)	55s
Test Suite (stable, --all-features)	57s
Test Suite (nightly, --no-default-features --features auto-install)	1m 1s
Test Suite (beta, --all-features)	58s
Test Suite (nightly, --no-default-features)	1m 2s
Test Suite (nightly, --all-features)	1m 5s
Test Suite (beta, --no-default-features --features auto-install)	51s
Test Suite (nightly)	1m 4s
Test Suite (nightly, --features pyo3)	1m 3s
Test Suite (stable, --no-default-features --features track-caller)	53s
Test Suite (nightly, --no-default-features --features track-caller)	58s
	49m 10s

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