relaxSemverValidation required for label to unlabeled releases

[kdorosh]

in validator_test.go we have:

			FDescribeTable("label workflow cases",
				labelWorkflow,
				Entry("initial rc", "v0.20.5", "v1.0.0-rc1", validBreakingChangelog, noValidationSettingsExist),
				Entry("initial rc relaxed", "v0.20.5", "v1.0.0-rc1", validBreakingChangelog, relaxedValidationSettingsExists),
				Entry("incrementing rc", "v1.0.0-rc1", "v1.0.0-rc2", validBreakingChangelog, noValidationSettingsExist),
				Entry("incrementing rc relaxed", "v1.0.0-rc1", "v1.0.0-rc2", validBreakingChangelog, relaxedValidationSettingsExists),
				Entry("stable release after rc for 1.0", "v1.0.0-rc2", "v1.0.0", validStableReleaseChangelog, noValidationSettingsExist),
				Entry("stable release after rc for 1.0 relaxed", "v1.0.0-rc2", "v1.0.0", validStableReleaseChangelog, relaxedValidationSettingsExists),
				Entry("stable release after rc for 1.1", "v1.1.0-rc2", "v1.1.0", validStableReleaseChangelog, noValidationSettingsExist),
				Entry("stable release after rc for 1.1 relaxed", "v1.1.0-rc2", "v1.1.0", validStableReleaseChangelog, relaxedValidationSettingsExists),
				Entry("initial rc after for 1.1", "v1.0.0", "v1.1.0-rc1", validNewFeatureChangelog, noValidationSettingsExist),
				Entry("initial rc after for 1.1 relaxed", "v1.0.0", "v1.1.0-rc1", validNewFeatureChangelog, relaxedValidationSettingsExists),
				Entry("foo3 to bar1", "v1.0.0-foo3", "v1.0.0-bar1", validNewFeatureChangelog, noValidationSettingsExist),
				Entry("foo3 to bar1 relaxed", "v1.0.0-foo3", "v1.0.0-bar1", validNewFeatureChangelog, relaxedValidationSettingsExists),
				Entry("foo1 to bar1", "v1.0.0-foo1", "v1.0.0-bar1", validNewFeatureChangelog, noValidationSettingsExist),
				Entry("foo1 to bar1 relaxed", "v1.0.0-foo1", "v1.0.0-bar1", validNewFeatureChangelog, relaxedValidationSettingsExists),
				Entry("foo1 to bar3", "v1.0.0-foo1", "v1.0.0-bar3", validNewFeatureChangelog, noValidationSettingsExist),
				Entry("foo1 to bar3 relaxed", "v1.0.0-foo1", "v1.0.0-bar3", validNewFeatureChangelog, relaxedValidationSettingsExists),
				Entry("foo1 to next minor", "v1.1.0-foo1", "v1.1.0", validNewFeatureChangelog, noValidationSettingsExist),
				Entry("foo1 to next minor relaxed", "v1.1.0-foo1", "v1.1.0", validNewFeatureChangelog, relaxedValidationSettingsExists))
		})

which should pass, and does not, because 1.1.0-beta1 -> 1.1.0 is marked as an invalid changelog change.

this should pass.

in the immediate term, we unblocked the release by relaxing semver validation to switch the version and then adding it back after relase.

cc @marcogschmidt