add missed ConfigureAwait(false)
add missed ConfigureAwait(false)

diadoc/diadocsdk-csharp,halex2005/diadocsdk-csharp,basmus/diadocsdk-csharp,ichaynikov/diadocsdk-csharp,halex2005/diadocsdk-csharp,basmus/diadocsdk-csharp,ichaynikov/diadocsdk-csharp,diadoc/diadocsdk-csharp