Update changelog.txt (#3190)
Update changelog.txt (#3190)

* Update changelog.txt

* Update changelog.txt

* Update changelog.txt
AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet