Automated SDK update

This updates the SDK from internal repo commit segmentio/public-api@68eaa5ba.

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", "{67CB7770-AC60-49BB-9C10-F5F2D034A8D5}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Segment.PublicApi", "src\Segment.PublicApi\Segment.PublicApi.csproj", "{56B2CB2E-DCE3-4682-B745-0091CB2608E4}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{67CB7770-AC60-49BB-9C10-F5F2D034A8D5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{67CB7770-AC60-49BB-9C10-F5F2D034A8D5}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{67CB7770-AC60-49BB-9C10-F5F2D034A8D5}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{67CB7770-AC60-49BB-9C10-F5F2D034A8D5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{56B2CB2E-DCE3-4682-B745-0091CB2608E4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{56B2CB2E-DCE3-4682-B745-0091CB2608E4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{56B2CB2E-DCE3-4682-B745-0091CB2608E4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{56B2CB2E-DCE3-4682-B745-0091CB2608E4}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE