chore(gRPC): Update a2a.proto to include metadata on GetTaskRequest#417

holtskinner merged 2 commits intomaina2aproject/a2a-python:mainfrom

auto-update-a2a-types-f0d48cdd5fd6e838605ccd08a96f106096d7005da2aproject/a2a-python:auto-update-a2a-types-f0d48cdd5fd6e838605ccd08a96f106096d7005dCopy head branch name to clipboard