Migration to Dash >= 3.0.0

[guillaume-vignal]

Description:

Dash 3.0.0 introduced breaking changes, including the removal of app.run_server in favor of app.run. Currently, Shapash uses run_server, which leads to errors when used with Dash >= 3.0.0 (e.g., dash.exceptions.ObsoleteAttributeException).

To ensure compatibility with newer versions of Dash and allow users to benefit from updates and improvements in the Dash ecosystem, we should consider updating Shapash to support Dash >= 3.0.0.

Tasks:

• Replace all instances of run_server with run (with appropriate argument adjustments if needed).
• Review and update the Dash-related parts of the tutorials.
• Run all unit and integration tests with Dash >= 3.0.0.
• Perform manual testing to ensure the UI components behave as expected.
• Update pyproject.toml to reflect the new version constraint (dash>=3.0.0,<4.0.0).

Note:
Until this work is completed, the Dash version will be temporarily pinned to <3.0.0 to avoid compatibility issues.

[csejourne]

Hello, I am currently trying to work with Shapash, and installing shapash with pip, I noticed that the dash version that is installed is >3.0.0, I had to manually uninstall dash and reinstall a version <3.0.0.

EDIT: the installation was done with uv on my local machine, and pip on a Google Colab notebook.