message: Updated PyBind11.
diff: message("Fetching pybind11")
  FetchContent_Declare(
  pybind11
  - URL https://github.com/pybind/pybind11/archive/refs/tags/v2.7.1.tar.gz
  - URL_HASH SHA256=616d1c42e4cf14fa27b2a4ff759d7d7b33006fdc5ad8fd603bb2c22622f27020
  + URL https://github.com/pybind/pybind11/archive/refs/tags/v2.10.1.tar.gz
  + URL_HASH SHA256=111014b516b625083bef701df7880f78c2243835abdb263065b6b59b960b6bad
  )
  FetchContent_GetProperties(pybind11)
  