ci: Exempt plotly.py from exclude-newer rule

[camdecoster]

Link to issue

Closes #5611

Description of change

Exempt plotly.py from exclude-newer rule

Testing strategy

Check CI after this PR is created.

Additional information (optional)

• The issue this fixes only occurs within 72 hours of a new plotly.py release

Guidelines

• I have reviewed the pull request guidelines and the Code of Conduct and confirm that this PR follows them.
• I have added an entry to the changelog if needed (not required for documentation PRs).

[emilykl]

Note: plotly is installed from PyPI only in the build-doc workflow, and then only on pull-request or push into the doc-prod branch; in all other scenarios (e.g. pull request into main) plotly is installed locally from this repo.