karafka 2.5.4 on Ruby Gems

[Enhancement] Align Datadog logger listener error handling with the main logger listener by adding missing error types and replacing UnsupportedCaseError with generic error logging to support dynamic errors reporting.
[Enhancement] Align Appsignal metrics listener USER_CONSUMER_ERROR_TYPES with all consumer error types for complete error tracking.
[Enhancement] Reduce gem package size by excluding development files (spec, examples, CI configs, dev scripts) from the gem build.
[Fix] Multiple route draws don't seem to work.
[Fix] Fix internal code compatibility with external libraries that prepend modules to Messages#each method (e.g., DataDog tracing) by introducing Messages#raw for internal iteration that bypasses patched enumerable methods.
[Maintenance] Removed base64 dependency.
[Maintenance] Add ErrorTypesChecker spec support module to programmatically verify listener error type coverage against source code definitions.

2.5.3 (2025-11-14)

[Enhancement] Dynamically support librdkafka fatal errors with correct reported details.
[Enhancement] Add producer block API to setup for simplified WaterDrop producer configuration without manual producer instance creation, using a transparent ConfigProxy during setup to avoid polluting the permanent config API.
[Change] Require waterdrop >= 2.8.14 to support new features.
[Change] Require karafka-rdkafka >= 0.23.1 to support new rebalance protocol.