merged from upstream

Author: malkia

cmake/opentelemetry-proto.cmake

@@ -49,7 +49,7 @@ else()
          "opentelemetry-proto=[ \\t]*([A-Za-z0-9_\\.\\-]+)")
         set(opentelemetry-proto "${CMAKE_MATCH_1}")
       else()
-        set(opentelemetry-proto "v1.4.0")
+        set(opentelemetry-proto "v1.5.0")
       endif()
       unset(OTELCPP_THIRD_PARTY_RELEASE_CONTENT)
     endif()