ci: Update plotly.js fetch location

[camdecoster]

Link to issue

Closes #5814.

Description of change

Remove the dependency on the committed plotly.js dist/ folder.

Testing strategy

I ran updateplotlyjs for version 4.1.1, and it reproduced the committed files byte-for-byte. I ran codegen and the core tests against the schema on plotly.js main, and they passed.

Additional information (optional)

• updateplotlyjs now downloads plotly.min.js and plot-schema.json from the npm package and verifies the npm checksum
• updateplotlyjsdev now accepts only a local plotly.js path (remote mode was removed)
• The new test-plotlyjs-dev.yml workflow replaces the per-PR "plotly.js dev build" job. It runs once a week and opens an issue if a scheduled run fails.
• This PR stops building the dev wheel artifact. We can add it back if there is demand.
• This update is in service of removing the dist folder from the plotly.js repo

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).

[KoolADE85]

LGTM!
I note that we have this issue plotly/plotly.js#7747 still open and we may want to close it now that this PR answers that question.

[camdecoster]

That will have to be closed once we actually remove it from plotly.js, but good call.