log protobuf and grpc versions if built using FetchContent

Author: dbarker

CMakeLists.txt

@@ -591,10 +591,10 @@ if(opentelemetry-proto_VERSION)
       "opentelemetry-proto: ${opentelemetry-proto_VERSION} (${opentelemetry-proto_PROVIDER})"
   )
 endif()
-if(Protobuf_FOUND)
+if(Protobuf_VERSION)
   message(STATUS "Protobuf: ${Protobuf_VERSION} (${Protobuf_PROVIDER})")
 endif()
-if(gRPC_FOUND)
+if(gRPC_VERSION)
   message(STATUS "gRPC: ${gRPC_VERSION} (${gRPC_PROVIDER})")
 endif()
 if(CURL_FOUND)