refactor(common): replace Never with Infallible #2288

Job	Run time
Check Style	7s
Verify hyper.h is up to date	40s
Test with Miri	1m 26s
features	2m 11s
Check deprecated on stable	40s
Test C API (FFI)	1m 9s
Check deprecated on beta	22s
Check MSRV (1.63)	5m 43s
Test stable on ubuntu-latest	1m 44s
Test stable on windows-latest	7m 4s
Test stable on macOS-latest	3m 42s
Test beta on ubuntu-latest	3m 14s
Test beta on windows-latest	3m 52s
Test beta on macOS-latest	2m 32s
Test nightly on ubuntu-latest	2m 5s
Test nightly on windows-latest	5m 39s
Test nightly on macOS-latest	3m 4s
Build docs	25s
CI is green	3s
	45m 42s

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