2025.4.0

Changes

• Improve error when submitting work from a closed client @jrbourbeau (#9049)
• Return a default value if address resolution fails @penguinpee (#9051)
• Avoid deepcopy when submitting graph @fjetter (#8633)
• Dynamically scale heartbeat and scheduler_info intervals @fjetter (#9046)
• Speed up process startup time by avoiding importing packages on version check @fjetter (#9048)
• Reduce size of scheduler_info @fjetter (#9045)
• Cache WorkerState host property @fjetter (#9044)
• clear ci env cache @fjetter (#9047)
• Remove deprecated PubSub @fjetter (#9039)
• Perform explicit culling step only if LLG is submitted @fjetter (#9040)
• Do not fully materialize global annotations by type @fjetter (#9035)
• Allow nested worker_client calls @gsakkis (#9038)
• Bump CI cache number @fjetter (#9037)
• Scheduler type annotations @fjetter (#9030)
• Reduce dask.order overhead by removing stripped_dep computation @fjetter (#9031)
• Use Expr instead of HLG @fjetter (#9008)

See the Changelog for more information.