I've made these conditional on NET6_0_OR_GREATER for now. We could set the requirement lower, but it's probably nicer to avoid NETSTANDARD2_1_OR_GREATER for now, given the lowest tested framework (netcore3.1) already matches netstandard 2.1 - so have kept it a bit simpler (especially since only .netstandard2.0 and .net6 are targeted anyway at the moment)
I've made these conditional on NET6_0_OR_GREATER for now. We could set the requirement lower, but it's probably nicer to avoid NETSTANDARD2_1_OR_GREATER for now, given the lowest tested framework (netcore3.1) already matches netstandard 2.1 - so have kept it a bit simpler (especially since only .netstandard2.0 and .net6 are targeted anyway at the moment)