Ensuring we always have 3 digits of milliseconds in ISO8601 dates.
Ensuring we always have 3 digits of milliseconds in ISO8601 dates.

Pinselohrkater/ef_app-backend-dotnet_core,eurofurence/ef-app_backend-dotnet-core,eurofurence/ef-app_backend-dotnet-core,Pinselohrkater/ef_app-backend-dotnet_core