Checks for OS fail on AWS/Lambda

[SebastianC]

When executed on within AWS/Lambda, the following line throws a PlatformNotSupportedException

RuntimeInformation.IsOSPlatform(OSPlatform.Windows)

This function is used by ConnectionSettings and a few other classes to modify their behavior by platform (such as attempting to use unix sockets vs tcp). While I have an open support issue with the Lambda team, I don't believe they will resolve this anytime soon.

[bgrainger]

Fixed in 0.11.6.