Failing bokeh tests with v3

[fjetter]

In #7413 we lifted the pinning on bokeh

https://dask.github.io/distributed/test_short_report.html

Since this PR the two tests

• distributed.dashboard.tests.test_scheduler_bokeh.test_https_support
• distributed.dashboard.tests.test_scheduler_bokeh.test_simple

are reliably failing with an internal server error.

[jacobtomlinson]

I think this is related to #7731

[jrbourbeau]

Yeah, agreed this is the same as #7731. Going to close this issue to consolidate conversation over in #7731. (Thanks for opening this on @fjetter)