[BUG] Deprecation warnings when running basic test in dash documentation

[prokie]

dash                 2.6.2
dash-core-components 2.0.0
dash-html-components 2.0.0
dash-table           5.0.0

Describe the bug

When running the basic dash test from the documentation, I get the following warning.

tests/test_website.py::test_001_child_with_0
  C:\Users\ethopon\AppData\Local\pypoetry\Cache\virtualenvs\poetry-demo-VBrwyLAy-py3.10\lib\site-packages\flask\scaffold.py:50: DeprecationWarning:

  'before_first_request' is deprecated and will be removed in Flask 2.3. Run setup code while creating the application instead.

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

Expected behavior

I expect to get no warnings.