The patch to add a dependency of opentelemetry-proto on gRPC should
not be needed after the upstream changes in:

open-telemetry/opentelemetry-cpp#2268

Additionally, the "zpages" feature is removed as it is no longer
present upstream after having been deprecated in a previous release.

A patch is added extracted from open-telemetry/opentelemetry-cpp#2475
and open-telemetry/opentelemetry-cpp#2449
which fix problems that arose after `NOMINMAX` was no longer
defined within opentelemetry-cpp on Windows.

Fixes microsoft#35992.