Update sbt-ci-release to 1.6.0 (#369) #462

Job	Run time
scripted (ubuntu-latest, 1.2.8)	7m 47s
scripted (ubuntu-latest, 1.3.13)	6m 8s
scripted (ubuntu-latest, project)	6m 1s
build (ubuntu-latest)	6m 44s
scripted (macos-latest, 1.2.8)	32m 27s
build (macos-latest)	17m 22s
scripted (macos-latest, 1.3.13)	33m 12s
build (windows-latest)	7m 10s
scripted (macos-latest, project)	22m 59s
scripted (windows-latest, 1.2.8)	9m 42s
scripted (windows-latest, 1.3.13)	9m 56s
scripted (windows-latest, project)	7m 52s
ci-passed	1s
	2h 47m 21s

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