Fixed the issue with Signature verification (#3750)
Fixed the issue with Signature verification (#3750)

* Verify that packages are signed
AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet