Python 3.14 support

[pmachapman]

Required for: sillsdev/machine.py#243

This PR:

• Updates to pybind11 3.0.1 which:
  • Adds support for Python 3.13 and 3.14
  • Removes support for Python 3.8 and 3.9
  • Requires CMake 3.15 or higher
• Updates the Linux runner from Ubuntu 20.04 to 22.04 (20.04 is no longer supported)
• Adds support for recent versions of homebrew
• Updates the GitHub actions to the same versions that machine.py uses
• Updates the macOS runners to macOS 15 (macOS 13 is no longer supported, and there is no macOS 14 intel runner)
• Updates openmp on macOS to 21.1.7 (required for clang 17 and macOS 15-26) with the following modifications:
  • Add: args << "-DCMAKE_OSX_DEPLOYMENT_TARGET=10.9"
    • This was retained from the previous openmp 14.0.6 formula as the only noted variation from the published homebrew formula.
  • Remove: keg_only "it can override GCC headers and result in broken builds"
    • This line was required for gcc, but breaks the clang config used by the runner.
• Fixes a mistake in the Trie template that causes an error in clang 17 (used by macOS 15-26)

[ddaspit]

This is awesome. Thank you so much for figuring this out.