[RC2] - Suppress BinSkim BA2008 warning for SqlServerSpatial170.dll

[SamMonoRT]

Update the gdnbaseline to suppress that warning. Update configure-sdl-tool.ps1 to exclude BinSkim scanning the third party SqlServerSpatial170.dll which doesn't have Control Flow Guard enabled. Not sure why this started showing up recently in the BinSkim runs.

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[SamMonoRT]

cc @artl93 - this is for RC2 and shld resolve a couple work items