chore: add semver job to CI #310

Job	Run time
Check Style	6s
semver	2m 35s
Check MSRV (1.63)	2m 44s
features	43s
Test with Miri	45s
Test stable on ubuntu-latest	33s
Test stable on windows-latest	2m 29s
Test stable on macOS-latest	1m 20s
Test beta on ubuntu-latest	35s
Test beta on windows-latest	1m 44s
Test beta on macOS-latest	1m 25s
Test nightly on ubuntu-latest	38s
Test nightly on windows-latest	1m 32s
Test nightly on macOS-latest	1m 54s
Build docs	19s
CI is green	1s
	19m 23s

Provide feedback