ADD: added new version of protobuf

libs/protobuf/kokoro/macos/python_cpp/build.sh

@@ -6,8 +6,8 @@
 cd $(dirname $0)/../../..
 
 # Prepare worker environment to run tests
-KOKORO_INSTALL_VENV=yes
+KOKORO_INSTALL_TOX=yes
 source kokoro/macos/prepare_build_macos_rc
+g++ --version
 
-bazel test //python/...  $(kokoro/common/bazel_flags.sh) \
-  --macos_minimum_os=10.9 --define=use_fast_cpp_protos=true
+./tests.sh python_cpp