Bump andymckay/cancel-action from 0.4 to 0.5 #83

Job	Run time
(OS X) Builds (aarch64-apple-ios)	1m 20s
Check (stable)	7s
(OS X) Builds (x86_64-apple-darwin)	2m 33s
Check (beta)	14s
(Windows) Builds (x86_64-pc-windows-msvc)	40s
Bench Compile (stable)	47s
Check (1.74.0)	15s
Rustfmt (nightly)	11s
(Linux) Builds (aarch64-linux-android)	1m 22s
Test Suite (stable)	1m 0s
(Linux) Builds (x86_64-unknown-linux-musl)	1m 18s
Test Suite (1.74.0)	1m 11s
(Linux) Builds (wasm32-unknown-unknown)	49s
	11m 47s

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