chore: replace magic numbers with expressions #418

Job	Run time
Build wasm	1m 57s
Run tests on Linux arm64	3m 16s
Run tests on Linux x86 (nightly, no default features)	1m 8s
Run tests on Linux x86 (stable, no default features)	1m 16s
Run tests on Linux x86 (nightly)	1m 9s
Run tests on macOS arm64 (Apple M1)	1m 10s
Run tests on Linux x86 (stable)	1m 15s
Run tests on Linux armv7	2m 55s
	14m 6s

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