feat: Add support for Python 3.14

[parthea]

No description provided.

[parthea]

This is blocked on geopandas/pyogrio#560

Collecting pyogrio>=0.7.2 (from geopandas>=1.0.1->bigquery-magics==0.10.3)
  Using cached pyogrio-0.11.1.tar.gz (287 kB)
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'done'
  Preparing metadata (pyproject.toml): started
  Preparing metadata (pyproject.toml): finished with status 'error'
  error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.

[chalmerlowe]

Migration Notice: This library is moving to the google-cloud-python monorepo soon.

We closed this PR due to inactivity to ensure a clean migration. Please re-open this work in the new monorepo once the migration is complete!