Include rasterio.show_versions() output in healthz endpoint

[scottyhq]

This is a hasty attempt to add rasterio.show_versions() to the healthz endpoint as discussed in #731 . It "works" but formatting could be improved...

curl -X 'GET' \
  'http://127.0.0.1:8000/healthz' \
  -H 'accept: application/json' | jq

{
  "Hello from titiler!": [
    "rasterio info:",
    "  rasterio: 1.4.3",
    "      GDAL: 3.9.3",
    "      PROJ: 9.4.1",
    "      GEOS: 0.0.0",
    " PROJ DATA: /Users/scotthenderson/miniforge3/envs/titiler/lib/python3.11/site-packages/rasterio/proj_data",
    " GDAL DATA: /Users/scotthenderson/miniforge3/envs/titiler/lib/python3.11/site-packages/rasterio/gdal_data",
    "",
    "System:",
    "    python: 3.11.11 | packaged by conda-forge | (main, Dec  5 2024, 14:21:42) [Clang 18.1.8 ]",
    "executable: /Users/scotthenderson/miniforge3/envs/titiler/bin/python",
    "   machine: macOS-15.2-arm64-arm-64bit",
    "",
    "Python deps:",
    "    affine: 2.4.0",
    "     attrs: 24.3.0",
    "   certifi: 2024.12.14",
    "     click: 8.1.7",
    "     cligj: 0.7.2",
    "    cython: None",
    "     numpy: 2.2.0",
    "click-plugins: None",
    "setuptools: 75.6.0"
  ]
}

[vincentsarago]

thanks @scottyhq 🙏