2.15.4

Various fixes & improvements

• ref: Add release workflow for Rust (#327) by @untitaker
• ref(ci): Add Rust CI (#324) by @untitaker
• Revert "ref: Move rust-arroyo from snuba to arroyo" (#325) by @untitaker
• ref: Move rust-arroyo from snuba to arroyo (#323) by @untitaker
• move rust-arroyo to subdirectory (#323) by @untitaker
• fix(multiprocessing): Implement better error messages for block overflow (#322) by @untitaker
• rust: add rust concurrency metric (#5341) by @untitaker
• ref(rust): Don't panic in RunTaskInThreads::poll (#5387) by @untitaker
• deps(rust): Change rdkafka dep to upstream master (#5386) by @untitaker
• ref(metrics): Refactor how global tags work, and introduce min_partition tag (#5346) by @untitaker
• Add Metrics impl based on merni (#5351) by @untitaker
• fix: Remove any panics in threads (#5353) by @untitaker
• ref(devserver): Use Rust consumers almost everywhere, and fix commitlog implementation (#5311) by @untitaker
• Avoid calling Topic::new for every received Message (#5331) by @untitaker
• Reuse Tokio Handle in DlqPolicy (#5329) by @untitaker
• ref(rust): Log actual error if strategy panics (#5317) by @untitaker
• fix(rust): add testcase for empty batches (#5299) by @untitaker
• Revert "ref(rust): Do not do extra work when merging if not needed (#5294)" (#323) by @untitaker
• ref(rust): Remove explicit buffering of gauges (#5293) by @untitaker
• doc: Add some notes to the fine-tuning section of RunTaskWithMultiprocessing, based on work in SBC (#321) by @untitaker
• ref(rust): Do not do extra work when merging if not needed (#5294) by @untitaker
• feat(rust): Add number of rows processed to the batch size instead of 1 (#5284) by @untitaker
• ref: Run CI on python 3.12 (#320) by @lynnagara
• fix(rust): Remove print stmt (#5269) by @untitaker

Plus 140 more