ci: add ccache hit-rate warning when < 75%

Print the ccache hit-rate for the job using a GitHub annotation if it
was below 75%.

ci/test/00_setup_env_mac_native.sh

@@ -8,6 +8,7 @@ export LC_ALL=C.UTF-8
 
 # Homebrew's python@3.12 is marked as externally managed (PEP 668).
 # Therefore, `--break-system-packages` is needed.
+export CONTAINER_NAME="ci_mac_native"  # macos does not use a container, but the env var is needed for logging
 export PIP_PACKAGES="--break-system-packages zmq"
 export GOAL="install deploy"
 export CMAKE_GENERATOR="Ninja"