deps: allow socket2 0.6 (#213) #680

Job	Run time
semver	25s
Check Style	8s
Test with Miri	52s
features	51s
Check MSRV (1.63)	4m 4s
Test stable on ubuntu-latest	30s
Test stable on macos-latest	43s
Test beta on ubuntu-latest	38s
Test beta on macos-latest	37s
Test nightly on windows-latest	1m 22s
Test nightly on macos-latest	57s
Test beta on windows-latest	1m 24s
Test nightly on ubuntu-latest	37s
Test stable on windows-latest	1m 30s
Build docs	15s
CI is green	2s
	14m 55s

Provide feedback