[BUILD] Update opentelemetry-proto version (open-telemetry#3254)

In `cmake/opentelemetry-proto.cmake` and `third_party_release` which
were not updated when upgrading to `1.5.0`.

Author: santigimeno

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()

third_party_release

@@ -19,7 +19,7 @@ benchmark=v1.8.3
 googletest=1.14.0
 ms-gsl=v3.1.0-67-g6f45293
 nlohmann-json=v3.11.3
-opentelemetry-proto=v1.4.0
+opentelemetry-proto=v1.5.0
 opentracing-cpp=v1.6.0
 prometheus-cpp=v1.3.0
 vcpkg=2024.02.14