With the addition of the new protos (flagd.evaluation.v1, flagd.sync.v1), we must update all clients (flagd providers) to use these endpoints.

In Java the associated code is already being generated by the build process, we must simply use the new classes generated with the new protos.

new protos in buf: https://buf.build/open-feature/flagd
new proto source: https://github.com/open-feature/flagd-schemas/tree/main/protobuf/flagd