Pinned requests dependency

Please resolve whatever issues are preventing you from using the most recent version of requests and unpin this dependency. Pinned dependencies in library packages introduce issues for users downstream, as shown in the output from pip included below.

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
dataiku-api-client 11.0.0 requires requests<2.22,>=2, but you have requests 2.28.1 which is incompatible.
Successfully installed adlfs-2022.11.2 aiohttp-3.8.3 art-5.8 azure-storage-blob-12.14.1 backoff-2.2.1 contourpy-1.0.6 cycler-0.11.0 exceptiongroup-1.0.4 fonttools-4.38.0 importlib-metadata-5.1.0 ipywidgets-8.0.2 jsonschema-4.17.3 jupyter-1.0.0 jupyter-console-6.4.4 jupyterlab-widgets-3.0.3 kiwisolver-1.4.4 llvmlite-0.39.1 markdown-3.4.1 matplotlib-3.6.2 mlflow-2.0.1 nest_asyncio-1.5.6 networkx-2.8.8 numba-0.56.4 numpy-1.22.4 pandas-1.5.2 papermill-2.4.0 pika-1.3.1 pyarrow-10.0.1 pydantic-1.10.2 pytest-7.2.0 pytest-asyncio-0.20.2 qtconsole-5.4.0 qtpy-2.3.0 redis-4.3.5 requests-2.28.1 scikit-learn-1.1.3 shap-0.41.0 slicer-0.0.7 treelite-3.0.1 treelite_runtime-3.0.1 widgetsnbextension-4.0.3

首先复现 issue 中所示的 pip 依赖冲突，并检查该包的依赖元数据以确认 requests 的版本固定。完成的标准是该包可以使用近期的 requests 版本，而不会对下游用户施加相互冲突的上限。