Automated SDK update

This updates the SDK from internal repo commit segmentio/public-api@6920cc9d.

Author: APIs and Common Services team

Segment.PublicApi.sln

@@ -2,18 +2,18 @@
 # Visual Studio 2012
 VisualStudioVersion = 12.0.0.0
 MinimumVisualStudioVersion = 10.0.0.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Segment.PublicApi", "src\Segment.PublicApi\Segment.PublicApi.csproj", "{AB27E8F6-8BA7-410A-868F-51A5B53862C4}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Segment.PublicApi", "src\Segment.PublicApi\Segment.PublicApi.csproj", "{E91D25D6-E32E-4F9D-9CA3-5CA42D1F41F8}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{AB27E8F6-8BA7-410A-868F-51A5B53862C4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{AB27E8F6-8BA7-410A-868F-51A5B53862C4}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{AB27E8F6-8BA7-410A-868F-51A5B53862C4}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{AB27E8F6-8BA7-410A-868F-51A5B53862C4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E91D25D6-E32E-4F9D-9CA3-5CA42D1F41F8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E91D25D6-E32E-4F9D-9CA3-5CA42D1F41F8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E91D25D6-E32E-4F9D-9CA3-5CA42D1F41F8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E91D25D6-E32E-4F9D-9CA3-5CA42D1F41F8}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE