fix: bump grpcio for Python 3.13

Fixes #4443

Author: dimaqq

exporter/opentelemetry-exporter-otlp-proto-grpc/pyproject.toml

@@ -30,7 +30,8 @@ classifiers = [
 dependencies = [
   "Deprecated >= 1.2.6",
   "googleapis-common-protos ~= 1.52",
-  "grpcio >= 1.63.2, < 2.0.0",
+  "grpcio >= 1.63.2, < 2.0.0; python_version < '3.13'",
+  "grpcio >= 1.66.2, < 2.0.0; python_version >= '3.13'",
   "opentelemetry-api ~= 1.15",
   "opentelemetry-proto == 1.31.0.dev",
   "opentelemetry-sdk ~= 1.31.0.dev",