- Ratchet up bokeh to >= 3.1, since upstream supports it.
- Also BuildRequire sparse for Python 3.11.

- Update to 2023.5.1
* This release drops support for Python 3.8
## Enhancements
* Exclude IPython code from computations (GH#7788) Miles
* Drop Python 3.8 support (GH#7840) Thomas Grainger
* Add storage_options to performance_report (GH#7636) ypogorelova
* Don’t warn about mismatched msgpack (GH#7839) Irina Truong
* Clean up sys.path on Server shutdown (GH#7838) James Bourbeau
* Dashboard: Fine Performance Metrics (GH#7725) Miles
## Bug Fixes
* Properly handle unknown chunk sizes in P2P rechunking (GH#7856)
Hendrik Makait
* Minimal change to work around (GH#7726) / support for UCX
(GH#7851) Benjamin Zaitlen
* Don’t end computations until cluster is truly idle (GH#7790)
crusaderky
- Release 2023.5.0
## Enhancements
* Client.upload_file send to both Workers and Scheduler and
rename scratch directory (GH#7802) Miles
* Allow dashboard to be used with bokeh prereleases (GH#7814)
James Bourbeau
## Bug Fixes
* Ensure log_event of non-msgpack serializable object do not kill
servers (GH#7472) Florian Jetter
* Fix test_nanny.py duplicated pytestmark definitions (GH#7819)
Thomas Grainger