What's up with TimeZoneInfo on .NET 6? (Part 2)

In part 1, we ended up with a lot of test data specified in a text file, but without working tests - and with a conundrum as to how we'd test the .NET Core 3.1 data which requires additional information about the "hidden" AdjustmentRule.BaseUtcOffsetDelta property. As with the previous blog post, this one is fairly...