v1.1.1

Removed

• The notebooks optional extra (jupyter, ipykernel). It only powered local
  editing of docs/quick_start.ipynb, which still renders on GitHub/PyPI without
  it, and its transitive tree (jupyter-server, jupyterlab, nbconvert, tornado,
  etc.) accounted for the bulk of the repo's open Dependabot alerts. Contributors
  who want to re-run the notebook can pip install jupyter directly. The shipped
  SDK is unaffected — its only runtime dependency remains httpx.

Changed

• Refreshed the dev/test dependency lock to clear the remaining Dependabot
  alerts (patched idna, pygments, pytest, python-dotenv; dropped
  urllib3/requests transitives). Dev-tool majors moved forward
  (mypy 1.18→2.1, pytest 8→9, ruff 0.14→0.15, vcrpy 7→8); all lint,
  type, and test gates stay green. No change to the shipped SDK's runtime deps.