Add Mikel as maintainer (#805)
Add Mikel as maintainer (#805)

Co-authored-by: Mike Goldsmith <c43a3c67d7a1203c37ce25b098df0254011e1ce6@gmail.com>
open-telemetry/opentelemetry-dotnet,open-telemetry/opentelemetry-dotnet,open-telemetry/opentelemetry-dotnet