message: Update to latest pyenv on MacOS, which has Python 3.9.4
diff: @@ -321,7 +321,7 @@ function setup_python_from_pyenv_macos {
  PY_VERSION=$1
  fi
  - git clone --branch v1.2.23 https://github.com/pyenv/pyenv.git
  + git clone --branch v1.2.27 https://github.com/pyenv/pyenv.git
  PYENV_ROOT="$(pwd)/pyenv"
  export PYENV_ROOT
  