chore(dependencies): bump tower to v0.5 #465

Job	Run time
Check Style	21s
semver	2m 37s
Check MSRV (1.63)	2m 23s
Test with Miri	51s
features	48s
Test stable on ubuntu-latest	39s
Test stable on windows-latest	1m 40s
Test stable on macos-latest	42s
Test beta on ubuntu-latest	36s
Test beta on windows-latest	1m 16s
Test beta on macos-latest	43s
Test nightly on ubuntu-latest	34s
Test nightly on windows-latest	1m 12s
Test nightly on macos-latest	36s
Build docs	14s
CI is green	0s
	15m 12s

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