chore(ci): add minimal versions checking #2345

Job	Run time
Verify hyper.h is up to date	52s
Check Style	4s
features	21s
Test with Miri	50s
Check MSRV	38s
Test stable on ubuntu-latest	1m 7s
Test C API (FFI)	36s
Test stable on windows-latest	1m 5s
udeps	28s
minimal-versions	34s
Test stable on macOS-latest	1m 1s
Test beta on ubuntu-latest	1m 8s
Test beta on windows-latest	1m 7s
Test beta on macOS-latest	1m 49s
Test nightly on ubuntu-latest	1m 11s
Test nightly on windows-latest	1m 4s
Test nightly on macOS-latest	1m 51s
Build docs	0s
Check exposed types	0s
CI is green	0s
	15m 46s

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